readahead: wipe out readahead

13 files changed, 3 insertions, 1925 deletions

diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index 3233e15f4e..137b7876d6 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -131,7 +131,7 @@ static int create_disk(
                 "Conflicts=umount.target\n"
                 "BindsTo=dev-mapper-%i.device\n"
                 "IgnoreOnIsolate=true\n"
-                "After=systemd-readahead-collect.service systemd-readahead-replay.service cryptsetup-pre.target\n",
+                "After=cryptsetup-pre.target\n",
                 f);
 
         if (!nofail)
diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
index 25d868aa87..539e2e64b5 100644
--- a/src/gpt-auto-generator/gpt-auto-generator.c
+++ b/src/gpt-auto-generator/gpt-auto-generator.c
@@ -144,7 +144,6 @@ static int add_cryptsetup(const char *id, const char *what, bool rw, char **devi
                 "Before=umount.target cryptsetup.target\n"
                 "After=%s\n"
                 "IgnoreOnIsolate=true\n"
-                "After=systemd-readahead-collect.service systemd-readahead-replay.service\n\n"
                 "[Service]\n"
                 "Type=oneshot\n"
                 "RemainAfterExit=yes\n"
diff --git a/src/notify/notify.c b/src/notify/notify.c
index 33933e4bf6..a0f757a252 100644
--- a/src/notify/notify.c
+++ b/src/notify/notify.c
@@ -31,7 +31,6 @@
 #include "strv.h"
 #include "util.h"
 #include "log.h"
-#include "sd-readahead.h"
 #include "build.h"
 #include "env-util.h"
 
@@ -39,7 +38,6 @@ static bool arg_ready = false;
 static pid_t arg_pid = 0;
 static const char *arg_status = NULL;
 static bool arg_booted = false;
-static const char *arg_readahead = NULL;
 
 static void help(void) {
         printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n"
@@ -49,8 +47,7 @@ static void help(void) {
                "     --ready            Inform the init system about service start-up completion\n"
                "     --pid[=PID]        Set main pid of daemon\n"
                "     --status=TEXT      Set status text\n"
-               "     --booted           Returns 0 if the system was booted up with systemd, non-zero otherwise\n"
-               "     --readahead=ACTION Controls read-ahead operations\n",
+               "     --booted           Returns 0 if the system was booted up with systemd, non-zero otherwise\n",
                program_invocation_short_name);
 }
 
@@ -62,7 +59,6 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_PID,
                 ARG_STATUS,
                 ARG_BOOTED,
-                ARG_READAHEAD
         };
 
         static const struct option options[] = {
@@ -72,7 +68,6 @@ static int parse_argv(int argc, char *argv[]) {
                 { "pid",       optional_argument, NULL, ARG_PID       },
                 { "status",    required_argument, NULL, ARG_STATUS    },
                 { "booted",    no_argument,       NULL, ARG_BOOTED    },
-                { "readahead", required_argument, NULL, ARG_READAHEAD },
                 {}
         };
 
@@ -118,10 +113,6 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_booted = true;
                         break;
 
-                case ARG_READAHEAD:
-                        arg_readahead = optarg;
-                        break;
-
                 case '?':
                         return -EINVAL;
 
@@ -134,8 +125,7 @@ static int parse_argv(int argc, char *argv[]) {
             !arg_ready &&
             !arg_status &&
             !arg_pid &&
-            !arg_booted &&
-            !arg_readahead) {
+            !arg_booted) {
                 help();
                 return -EINVAL;
         }
@@ -160,14 +150,6 @@ int main(int argc, char* argv[]) {
         if (arg_booted)
                 return sd_booted() <= 0;
 
-        if (arg_readahead) {
-                r = sd_readahead(arg_readahead);
-                if (r < 0) {
-                        log_error("Failed to issue read-ahead control command: %s", strerror(-r));
-                        goto finish;
-                }
-        }
-
         if (arg_ready)
                 our_env[i++] = (char*) "READY=1";
 
diff --git a/src/readahead/Makefile b/src/readahead/Makefile
deleted file mode 120000
index d0b0e8e008..0000000000
--- a/src/readahead/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-../Makefile
\ No newline at end of file
diff --git a/src/readahead/readahead-analyze.c b/src/readahead/readahead-analyze.c
deleted file mode 100644
index 76db3cb7e4..0000000000
--- a/src/readahead/readahead-analyze.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2012 Auke Kok <auke-jan.h.kok@intel.com>
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <linux/limits.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
-
-#include "readahead-common.h"
-
-int main_analyze(const char *pack_path) {
-        char line[LINE_MAX];
-        _cleanup_fclose_ FILE *pack = NULL;
-        int a;
-        int missing = 0;
-        size_t tsize = 0;
-
-        if (!pack_path)
-                pack_path = "/.readahead";
-
-        pack = fopen(pack_path, "re");
-        if (!pack) {
-                log_error("Pack file missing.");
-                goto fail;
-        }
-
-        if (!fgets(line, sizeof(line), pack)) {
-                log_error("Pack file corrupt.");
-                goto fail;
-        }
-
-        char_array_0(line);
-
-        if (!endswith(line, READAHEAD_PACK_FILE_VERSION)) {
-                log_error("Pack file version incompatible with this parser.");
-                goto fail;
-        }
-
-        if ((a = getc(pack)) == EOF) {
-                log_error("Pack file corrupt.");
-                goto fail;
-        }
-
-        fputs("   pct  sections     size: path\n"
-              "   ===  ========     ====: ====\n", stdout);
-
-        for (;;) {
-                char path[PATH_MAX];
-                struct stat st;
-                uint64_t inode;
-                int pages = 0;
-                int sections = 0;
-
-                if (!fgets(path, sizeof(path), pack))
-                        break; /* done */
-
-                path[strlen(path)-1] = 0;
-
-                if (fread(&inode, sizeof(inode), 1, pack) != 1) {
-                        log_error("Pack file corrupt.");
-                        goto fail;
-                }
-
-                for (;;) {
-                        uint32_t b, c;
-
-                        if (fread(&b, sizeof(b), 1, pack) != 1  ||
-                            fread(&c, sizeof(c), 1, pack) != 1) {
-                                log_error("Pack file corrupt.");
-                                goto fail;
-                        }
-                        if ((b == 0) && (c == 0))
-                                break;
-
-                        /* Uncomment this to get all the chunks separately
-                           printf(" %d: %d %d\n", sections, b, c);
-                         */
-
-                        pages += (c - b);
-                        sections++;
-                }
-
-                if (stat(path, &st) == 0) {
-                        off_t size;
-
-                        if (sections == 0)
-                                size = st.st_size;
-                        else
-                                size = pages * page_size();
-
-                        tsize += size;
-
-                        printf("  %4jd%% (%2d) %12jd: %s\n",
-                               (intmax_t) (sections && st.st_size ? size * 100 / st.st_size : 100),
-                               sections ? sections : 1,
-                               (intmax_t) size,
-                               path);
-                } else {
-                        printf("  %4dp (%2d) %12s: %s (MISSING)\n",
-                                sections ? pages : -1,
-                                sections ? sections : 1,
-                                "???",
-                                path);
-                        missing++;
-                }
-
-        }
-
-        printf("\nHOST:    %s"
-               "TYPE:    %c\n"
-               "MISSING: %d\n"
-               "TOTAL:   %zu\n",
-               line,
-               a,
-               missing,
-               tsize);
-
-        return EXIT_SUCCESS;
-
-fail:
-        return EXIT_FAILURE;
-}
diff --git a/src/readahead/readahead-collect.c b/src/readahead/readahead-collect.c
deleted file mode 100644
index 822a803a41..0000000000
--- a/src/readahead/readahead-collect.c
+++ /dev/null
@@ -1,650 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <linux/limits.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <linux/fanotify.h>
-#include <sys/signalfd.h>
-#include <sys/poll.h>
-#include <sys/mman.h>
-#include <linux/fs.h>
-#include <linux/fiemap.h>
-#include <sys/ioctl.h>
-#include <sys/vfs.h>
-#include <getopt.h>
-#include <sys/inotify.h>
-#include <math.h>
-
-#ifdef HAVE_LINUX_BTRFS_H
-#include <linux/btrfs.h>
-#endif
-
-#ifdef HAVE_FANOTIFY_INIT
-#include <sys/fanotify.h>
-#endif
-
-#include "systemd/sd-daemon.h"
-
-#include "missing.h"
-#include "util.h"
-#include "set.h"
-#include "ioprio.h"
-#include "readahead-common.h"
-#include "virt.h"
-
-/* fixme:
- *
- * - detect ssd on btrfs/lvm...
- * - read ahead directories
- * - gzip?
- * - remount rw?
- * - handle files where nothing is in mincore
- * - does ioprio_set work with fadvise()?
- */
-
-static ReadaheadShared *shared = NULL;
-static usec_t starttime;
-
-/* Avoid collisions with the NULL pointer */
-#define SECTOR_TO_PTR(s) ULONG_TO_PTR((s)+1)
-#define PTR_TO_SECTOR(p) (PTR_TO_ULONG(p)-1)
-
-static int btrfs_defrag(int fd) {
-        struct btrfs_ioctl_vol_args data = { .fd = fd };
-
-        return ioctl(fd, BTRFS_IOC_DEFRAG, &data);
-}
-
-static int pack_file(FILE *pack, const char *fn, bool on_btrfs) {
-        struct stat st;
-        void *start = MAP_FAILED;
-        uint8_t *vec;
-        uint32_t b, c;
-        uint64_t inode;
-        size_t l, pages;
-        bool mapped;
-        int r = 0, fd = -1, k;
-
-        assert(pack);
-        assert(fn);
-
-        fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOATIME|O_NOCTTY|O_NOFOLLOW);
-        if (fd < 0) {
-
-                if (errno == ENOENT)
-                        return 0;
-
-                if (errno == EPERM || errno == EACCES)
-                        return 0;
-
-                log_warning("open(%s) failed: %m", fn);
-                r = -errno;
-                goto finish;
-        }
-
-        k = file_verify(fd, fn, arg_file_size_max, &st);
-        if (k <= 0) {
-                r = k;
-                goto finish;
-        }
-
-        if (on_btrfs)
-                btrfs_defrag(fd);
-
-        l = PAGE_ALIGN(st.st_size);
-        start = mmap(NULL, l, PROT_READ, MAP_SHARED, fd, 0);
-        if (start == MAP_FAILED) {
-                log_warning("mmap(%s) failed: %m", fn);
-                r = -errno;
-                goto finish;
-        }
-
-        pages = l / page_size();
-        vec = alloca0(pages);
-        if (mincore(start, l, vec) < 0) {
-                log_warning("mincore(%s) failed: %m", fn);
-                r = -errno;
-                goto finish;
-        }
-
-        fputs(fn, pack);
-        fputc('\n', pack);
-
-        /* Store the inode, so that we notice when the file is deleted */
-        inode = (uint64_t) st.st_ino;
-        fwrite(&inode, sizeof(inode), 1, pack);
-
-        mapped = false;
-        for (c = 0; c < pages; c++) {
-                bool new_mapped = !!(vec[c] & 1);
-
-                if (!mapped && new_mapped)
-                        b = c;
-                else if (mapped && !new_mapped) {
-                        fwrite(&b, sizeof(b), 1, pack);
-                        fwrite(&c, sizeof(c), 1, pack);
-
-                        log_debug("%s: page %u to %u", fn, b, c);
-                }
-
-                mapped = new_mapped;
-        }
-
-        /* We don't write any range data if we should read the entire file */
-        if (mapped && b > 0) {
-                fwrite(&b, sizeof(b), 1, pack);
-                fwrite(&c, sizeof(c), 1, pack);
-
-                log_debug("%s: page %u to %u", fn, b, c);
-        }
-
-        /* End marker */
-        b = 0;
-        fwrite(&b, sizeof(b), 1, pack);
-        fwrite(&b, sizeof(b), 1, pack);
-
-finish:
-        if (start != MAP_FAILED)
-                munmap(start, l);
-
-        safe_close(fd);
-
-        return r;
-}
-
-static unsigned long fd_first_block(int fd) {
-        struct {
-                struct fiemap fiemap;
-                struct fiemap_extent extent;
-        } data = {
-                .fiemap.fm_length = ~0ULL,
-                .fiemap.fm_extent_count = 1,
-        };
-
-        if (ioctl(fd, FS_IOC_FIEMAP, &data) < 0)
-                return 0;
-
-        if (data.fiemap.fm_mapped_extents <= 0)
-                return 0;
-
-        if (data.fiemap.fm_extents[0].fe_flags & FIEMAP_EXTENT_UNKNOWN)
-                return 0;
-
-        return (unsigned long) data.fiemap.fm_extents[0].fe_physical;
-}
-
-struct item {
-        const char *path;
-        unsigned long block;
-        unsigned long bin;
-};
-
-static int qsort_compare(const void *a, const void *b) {
-        const struct item *i, *j;
-
-        i = a;
-        j = b;
-
-        /* sort by bin first */
-        if (i->bin < j->bin)
-                return -1;
-        if (i->bin > j->bin)
-                return 1;
-
-        /* then sort by sector */
-        if (i->block < j->block)
-                return -1;
-        if (i->block > j->block)
-                return 1;
-
-        return strcmp(i->path, j->path);
-}
-
-static int collect(const char *root) {
-        enum {
-                FD_FANOTIFY,  /* Get the actual fs events */
-                FD_SIGNAL,
-                FD_INOTIFY,   /* We get notifications to quit early via this fd */
-                _FD_MAX
-        };
-        struct pollfd pollfd[_FD_MAX] = {};
-        int fanotify_fd = -1, signal_fd = -1, inotify_fd = -1, r = 0;
-        pid_t my_pid;
-        Hashmap *files = NULL;
-        Iterator i;
-        char *p, *q;
-        sigset_t mask;
-        FILE *pack = NULL;
-        char *pack_fn_new = NULL, *pack_fn = NULL;
-        bool on_ssd, on_btrfs;
-        struct statfs sfs;
-        usec_t not_after;
-        uint64_t previous_block_readahead;
-        bool previous_block_readahead_set = false;
-
-        assert(root);
-
-        if (asprintf(&pack_fn, "%s/.readahead", root) < 0) {
-                r = log_oom();
-                goto finish;
-        }
-
-        starttime = now(CLOCK_MONOTONIC);
-
-        /* If there's no pack file yet we lower the kernel readahead
-         * so that mincore() is accurate. If there is a pack file
-         * already we assume it is accurate enough so that kernel
-         * readahead is never triggered. */
-        previous_block_readahead_set =
-                access(pack_fn, F_OK) < 0 &&
-                block_get_readahead(root, &previous_block_readahead) >= 0 &&
-                block_set_readahead(root, 8*1024) >= 0;
-
-        if (ioprio_set(IOPRIO_WHO_PROCESS, getpid(), IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) < 0)
-                log_warning("Failed to set IDLE IO priority class: %m");
-
-        assert_se(sigemptyset(&mask) == 0);
-        sigset_add_many(&mask, SIGINT, SIGTERM, -1);
-        assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
-
-        if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) {
-                log_error("signalfd(): %m");
-                r = -errno;
-                goto finish;
-        }
-
-        files = hashmap_new(&string_hash_ops);
-        if (!files) {
-                log_error("Failed to allocate set.");
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        fanotify_fd = fanotify_init(FAN_CLOEXEC|FAN_NONBLOCK, O_RDONLY|O_LARGEFILE|O_CLOEXEC|O_NOATIME);
-        if (fanotify_fd < 0)  {
-                log_error("Failed to create fanotify object: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        if (fanotify_mark(fanotify_fd, FAN_MARK_ADD|FAN_MARK_MOUNT, FAN_OPEN, AT_FDCWD, root) < 0) {
-                log_error("Failed to mark %s: %m", root);
-                r = -errno;
-                goto finish;
-        }
-
-        inotify_fd = open_inotify();
-        if (inotify_fd < 0) {
-                r = inotify_fd;
-                goto finish;
-        }
-
-        not_after = now(CLOCK_MONOTONIC) + arg_timeout;
-
-        my_pid = getpid();
-
-        pollfd[FD_FANOTIFY].fd = fanotify_fd;
-        pollfd[FD_FANOTIFY].events = POLLIN;
-        pollfd[FD_SIGNAL].fd = signal_fd;
-        pollfd[FD_SIGNAL].events = POLLIN;
-        pollfd[FD_INOTIFY].fd = inotify_fd;
-        pollfd[FD_INOTIFY].events = POLLIN;
-
-        sd_notify(0,
-                  "READY=1\n"
-                  "STATUS=Collecting readahead data");
-
-        log_debug("Collecting...");
-
-        if (access("/run/systemd/readahead/cancel", F_OK) >= 0) {
-                log_debug("Collection canceled");
-                r = -ECANCELED;
-                goto finish;
-        }
-
-        if (access("/run/systemd/readahead/done", F_OK) >= 0) {
-                log_debug("Got termination request");
-                goto done;
-        }
-
-        for (;;) {
-                union {
-                        struct fanotify_event_metadata metadata;
-                        char buffer[4096];
-                } data;
-                ssize_t n;
-                struct fanotify_event_metadata *m;
-                usec_t t;
-                int h;
-
-                if (hashmap_size(files) > arg_files_max) {
-                        log_debug("Reached maximum number of read ahead files, ending collection.");
-                        break;
-                }
-
-                t = now(CLOCK_MONOTONIC);
-                if (t >= not_after) {
-                        log_debug("Reached maximum collection time, ending collection.");
-                        break;
-                }
-
-                if ((h = poll(pollfd, _FD_MAX, (int) ((not_after - t) / USEC_PER_MSEC))) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        log_error("poll(): %m");
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (h == 0) {
-                        log_debug("Reached maximum collection time, ending collection.");
-                        break;
-                }
-
-                if (pollfd[FD_SIGNAL].revents) {
-                        log_debug("Got signal.");
-                        break;
-                }
-
-                if (pollfd[FD_INOTIFY].revents) {
-                        uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX];
-                        struct inotify_event *e;
-
-                        if ((n = read(inotify_fd, &inotify_buffer, sizeof(inotify_buffer))) < 0) {
-                                if (errno == EINTR || errno == EAGAIN)
-                                        continue;
-
-                                log_error("Failed to read inotify event: %m");
-                                r = -errno;
-                                goto finish;
-                        }
-
-                        e = (struct inotify_event*) inotify_buffer;
-                        while (n > 0) {
-                                size_t step;
-
-                                if ((e->mask & IN_CREATE) && streq(e->name, "cancel")) {
-                                        log_debug("Collection canceled");
-                                        r = -ECANCELED;
-                                        goto finish;
-                                }
-
-                                if ((e->mask & IN_CREATE) && streq(e->name, "done")) {
-                                        log_debug("Got termination request");
-                                        goto done;
-                                }
-
-                                step = sizeof(struct inotify_event) + e->len;
-                                assert(step <= (size_t) n);
-
-                                e = (struct inotify_event*) ((uint8_t*) e + step);
-                                n -= step;
-                        }
-                }
-
-                n = read(fanotify_fd, &data, sizeof(data));
-                if (n < 0) {
-
-                        if (errno == EINTR || errno == EAGAIN)
-                                continue;
-
-                        /* fanotify sometimes returns EACCES on read()
-                         * where it shouldn't. For now let's just
-                         * ignore it here (which is safe), but
-                         * eventually this should be
-                         * dropped when the kernel is fixed.
-                         *
-                         * https://bugzilla.redhat.com/show_bug.cgi?id=707577 */
-                        if (errno == EACCES)
-                                continue;
-
-                        log_error("Failed to read event: %m");
-                        r = -errno;
-                        goto finish;
-                }
-
-                for (m = &data.metadata; FAN_EVENT_OK(m, n); m = FAN_EVENT_NEXT(m, n)) {
-                        char fn[sizeof("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
-                        int k;
-
-                        if (m->fd < 0)
-                                goto next_iteration;
-
-                        if (m->pid == my_pid)
-                                goto next_iteration;
-
-                        __sync_synchronize();
-                        if (m->pid == shared->replay)
-                                goto next_iteration;
-
-                        snprintf(fn, sizeof(fn), "/proc/self/fd/%i", m->fd);
-                        k = readlink_malloc(fn, &p);
-                        if (k >= 0) {
-                                if (startswith(p, "/tmp") ||
-                                    endswith(p, " (deleted)") ||
-                                    hashmap_get(files, p))
-                                        /* Not interesting, or
-                                         * already read */
-                                        free(p);
-                                else {
-                                        unsigned long ul;
-                                        usec_t entrytime;
-                                        struct item *entry;
-
-                                        entry = new0(struct item, 1);
-                                        if (!entry) {
-                                                r = log_oom();
-                                                goto finish;
-                                        }
-
-                                        ul = fd_first_block(m->fd);
-
-                                        entrytime = now(CLOCK_MONOTONIC);
-
-                                        entry->block = ul;
-                                        entry->path = strdup(p);
-                                        if (!entry->path) {
-                                                free(entry);
-                                                r = log_oom();
-                                                goto finish;
-                                        }
-                                        entry->bin = (entrytime - starttime) / 2000000;
-
-                                        k = hashmap_put(files, p, entry);
-                                        if (k < 0) {
-                                                log_warning("hashmap_put() failed: %s", strerror(-k));
-                                                free(p);
-                                        }
-                                }
-
-                        } else
-                                log_warning("readlink(%s) failed: %s", fn, strerror(-k));
-
-                next_iteration:
-                        safe_close(m->fd);
-                }
-        }
-
-done:
-        fanotify_fd = safe_close(fanotify_fd);
-
-        log_debug("Writing Pack File...");
-
-        on_ssd = fs_on_ssd(root) > 0;
-        log_debug("On SSD: %s", yes_no(on_ssd));
-
-        on_btrfs = statfs(root, &sfs) >= 0 && F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC);
-        log_debug("On btrfs: %s", yes_no(on_btrfs));
-
-        if (asprintf(&pack_fn_new, "%s/.readahead.new", root) < 0) {
-                r = log_oom();
-                goto finish;
-        }
-
-        pack = fopen(pack_fn_new, "we");
-        if (!pack) {
-                log_error("Failed to open pack file: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        fputs(CANONICAL_HOST READAHEAD_PACK_FILE_VERSION, pack);
-        putc(on_ssd ? 'S' : 'R', pack);
-
-        if (on_ssd || on_btrfs) {
-
-                /* On SSD or on btrfs, just write things out in the
-                 * order the files were accessed. */
-
-                HASHMAP_FOREACH_KEY(q, p, files, i)
-                        pack_file(pack, p, on_btrfs);
-        } else {
-                unsigned n;
-
-                /* On rotating media, order things by the block
-                 * numbers */
-
-                log_debug("Ordering...");
-
-                n = hashmap_size(files);
-                if (n) {
-                        _cleanup_free_ struct item *ordered;
-                        struct item *j;
-                        unsigned k;
-
-                        ordered = new(struct item, n);
-                        if (!ordered) {
-                                r = log_oom();
-                                goto finish;
-                        }
-
-                        j = ordered;
-                        HASHMAP_FOREACH_KEY(q, p, files, i) {
-                                memcpy(j, q, sizeof(struct item));
-                                j++;
-                        }
-
-                        assert(ordered + n == j);
-
-                        qsort(ordered, n, sizeof(struct item), qsort_compare);
-
-                        for (k = 0; k < n; k++)
-                                pack_file(pack, ordered[k].path, on_btrfs);
-                } else
-                        log_warning("No pack files");
-        }
-
-        log_debug("Finalizing...");
-
-        fflush(pack);
-
-        if (ferror(pack)) {
-                log_error("Failed to write pack file.");
-                r = -EIO;
-                goto finish;
-        }
-
-        if (rename(pack_fn_new, pack_fn) < 0) {
-                log_error("Failed to rename readahead file: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        fclose(pack);
-        pack = NULL;
-
-        log_debug("Done.");
-
-finish:
-        safe_close(fanotify_fd);
-        safe_close(signal_fd);
-        safe_close(inotify_fd);
-
-        if (pack) {
-                fclose(pack);
-                unlink(pack_fn_new);
-        }
-        free(pack_fn_new);
-        free(pack_fn);
-
-        while ((p = hashmap_steal_first_key(files)))
-                free(p);
-
-        hashmap_free(files);
-
-        if (previous_block_readahead_set) {
-                uint64_t bytes;
-
-                /* Restore the original kernel readahead setting if we
-                 * changed it, and nobody has overwritten it since
-                 * yet. */
-                if (block_get_readahead(root, &bytes) >= 0 && bytes == 8*1024)
-                        block_set_readahead(root, previous_block_readahead);
-        }
-
-        return r;
-}
-
-int main_collect(const char *root) {
-
-        if (!root)
-                root = "/";
-
-        /* Skip this step on read-only media. Note that we check the
-         * underlying block device here, not he read-only flag of the
-         * file system on top, since that one is most likely mounted
-         * read-only anyway at boot, even if the underlying block
-         * device is theoretically writable. */
-        if (fs_on_read_only(root) > 0) {
-                log_info("Disabling readahead collector due to read-only media.");
-                return EXIT_SUCCESS;
-        }
-
-        if (!enough_ram()) {
-                log_info("Disabling readahead collector due to low memory.");
-                return EXIT_SUCCESS;
-        }
-
-        shared = shared_get();
-        if (!shared)
-                return EXIT_FAILURE;
-
-        shared->collect = getpid();
-        __sync_synchronize();
-
-        if (collect(root) < 0)
-                return EXIT_FAILURE;
-
-        return EXIT_SUCCESS;
-}
diff --git a/src/readahead/readahead-common.c b/src/readahead/readahead-common.c
deleted file mode 100644
index 3ca48a7257..0000000000
--- a/src/readahead/readahead-common.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/sysinfo.h>
-#include <sys/inotify.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include "log.h"
-#include "readahead-common.h"
-#include "util.h"
-#include "missing.h"
-#include "fileio.h"
-#include "libudev.h"
-#include "udev-util.h"
-
-int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st) {
-        assert(fd >= 0);
-        assert(fn);
-        assert(st);
-
-        if (fstat(fd, st) < 0) {
-                log_warning("fstat(%s) failed: %m", fn);
-                return -errno;
-        }
-
-        if (!S_ISREG(st->st_mode)) {
-                log_debug("Not preloading special file %s", fn);
-                return 0;
-        }
-
-        if (st->st_size <= 0 || st->st_size > file_size_max) {
-                assert_cc(sizeof(st->st_size) == 8);
-                log_debug("Not preloading file %s with size out of bounds %"PRIu64,
-                          fn, st->st_size);
-                return 0;
-        }
-
-        return 1;
-}
-
-int fs_on_ssd(const char *p) {
-        struct stat st;
-        _cleanup_udev_unref_ struct udev *udev = NULL;
-        _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
-        struct udev_device *look_at = NULL;
-        const char *devtype, *rotational, *model, *id;
-        int r;
-
-        assert(p);
-
-        if (stat(p, &st) < 0)
-                return -errno;
-
-        if (major(st.st_dev) == 0) {
-                _cleanup_fclose_ FILE *f = NULL;
-                int mount_id;
-                union file_handle_union h = { .handle.handle_bytes = MAX_HANDLE_SZ, };
-
-                /* Might be btrfs, which exposes "ssd" as mount flag if it is on ssd.
-                 *
-                 * We first determine the mount ID here, if we can,
-                 * and then lookup the mount ID in mountinfo to find
-                 * the mount options. */
-
-                r = name_to_handle_at(AT_FDCWD, p, &h.handle, &mount_id, AT_SYMLINK_FOLLOW);
-                if (r < 0)
-                        return false;
-
-                f = fopen("/proc/self/mountinfo", "re");
-                if (!f)
-                        return false;
-
-                for (;;) {
-                        char line[LINE_MAX], *e;
-                        _cleanup_free_ char *opts = NULL;
-                        int mid;
-
-                        if (!fgets(line, sizeof(line), f))
-                                return false;
-
-                        truncate_nl(line);
-
-                        if (sscanf(line, "%i", &mid) != 1)
-                                continue;
-
-                        if (mid != mount_id)
-                                continue;
-
-                        e = strstr(line, " - ");
-                        if (!e)
-                                continue;
-
-                        if (sscanf(e+3, "%*s %*s %ms", &opts) != 1)
-                                continue;
-
-                        if (streq(opts, "ssd") || startswith(opts, "ssd,") || endswith(opts, ",ssd") || strstr(opts, ",ssd,"))
-                                return true;
-                }
-
-                return false;
-        }
-
-        udev = udev_new();
-        if (!udev)
-                return -ENOMEM;
-
-        udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
-        if (!udev_device)
-                return false;
-
-        devtype = udev_device_get_property_value(udev_device, "DEVTYPE");
-        if (devtype && streq(devtype, "partition"))
-                look_at = udev_device_get_parent(udev_device);
-        else
-                look_at = udev_device;
-
-        if (!look_at)
-                return false;
-
-        /* First, try high-level property */
-        id = udev_device_get_property_value(look_at, "ID_SSD");
-        if (id)
-                return streq(id, "1");
-
-        /* Second, try kernel attribute */
-        rotational = udev_device_get_sysattr_value(look_at, "queue/rotational");
-        if (rotational)
-                return streq(rotational, "0");
-
-        /* Finally, fallback to heuristics */
-        look_at = udev_device_get_parent(look_at);
-        if (!look_at)
-                return false;
-
-        model = udev_device_get_sysattr_value(look_at, "model");
-        if (model)
-                return !!strstr(model, "SSD");
-
-        return false;
-}
-
-int fs_on_read_only(const char *p) {
-        struct stat st;
-        _cleanup_udev_unref_ struct udev *udev = NULL;
-        _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
-        const char *read_only;
-
-        assert(p);
-
-        if (stat(p, &st) < 0)
-                return -errno;
-
-        if (major(st.st_dev) == 0)
-                return false;
-
-        udev = udev_new();
-        if (!udev)
-                return -ENOMEM;
-
-        udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
-        if (!udev_device)
-                return false;
-
-        read_only = udev_device_get_sysattr_value(udev_device, "ro");
-        if (read_only)
-                return streq(read_only, "1");
-
-        return false;
-}
-
-bool enough_ram(void) {
-        struct sysinfo si;
-
-        assert_se(sysinfo(&si) >= 0);
-
-        /* Enable readahead only with at least 128MB memory */
-        return si.totalram > 127 * 1024*1024 / si.mem_unit;
-}
-
-static void mkdirs(void) {
-        if (mkdir("/run/systemd", 0755) && errno != EEXIST)
-                log_warning("Failed to create /run/systemd: %m");
-        if (mkdir("/run/systemd/readahead", 0755) && errno != EEXIST)
-                log_warning("Failed to create /run/systemd: %m");
-}
-
-int open_inotify(void) {
-        int fd;
-
-        fd = inotify_init1(IN_CLOEXEC|IN_NONBLOCK);
-        if (fd < 0) {
-                log_error("Failed to create inotify handle: %m");
-                return -errno;
-        }
-
-        mkdirs();
-
-        if (inotify_add_watch(fd, "/run/systemd/readahead", IN_CREATE) < 0) {
-                log_error("Failed to watch /run/systemd/readahead: %m");
-                safe_close(fd);
-                return -errno;
-        }
-
-        return fd;
-}
-
-ReadaheadShared *shared_get(void) {
-        _cleanup_close_ int fd = -1;
-        ReadaheadShared *m = NULL;
-
-        mkdirs();
-
-        fd = open("/run/systemd/readahead/shared", O_CREAT|O_RDWR|O_CLOEXEC, 0644);
-        if (fd < 0) {
-                log_error("Failed to create shared memory segment: %m");
-                return NULL;
-        }
-
-        if (ftruncate(fd, sizeof(ReadaheadShared)) < 0) {
-                log_error("Failed to truncate shared memory segment: %m");
-                return NULL;
-        }
-
-        m = mmap(NULL, sizeof(ReadaheadShared), PROT_WRITE|PROT_READ, MAP_SHARED, fd, 0);
-        if (m == MAP_FAILED) {
-                log_error("Failed to mmap shared memory segment: %m");
-                return NULL;
-        }
-
-        return m;
-}
-
-/* We use 20K instead of the more human digestable 16K here. Why?
-   Simply so that it is more unlikely that users end up picking this
-   value too so that we can recognize better whether the user changed
-   the value while we had it temporarily bumped. */
-#define BUMP_REQUEST_NR (20*1024u)
-
-int block_bump_request_nr(const char *p) {
-        struct stat st;
-        uint64_t u;
-        char *ap = NULL, *line = NULL;
-        int r;
-        dev_t d;
-
-        assert(p);
-
-        if (stat(p, &st) < 0)
-                return -errno;
-
-        if (major(st.st_dev) == 0)
-                return 0;
-
-        d = st.st_dev;
-        block_get_whole_disk(d, &d);
-
-        if (asprintf(&ap, "/sys/dev/block/%u:%u/queue/nr_requests", major(d), minor(d)) < 0) {
-                r= -ENOMEM;
-                goto finish;
-        }
-
-        r = read_one_line_file(ap, &line);
-        if (r < 0) {
-                if (r == -ENOENT)
-                        r = 0;
-                goto finish;
-        }
-
-        r = safe_atou64(line, &u);
-        if (r >= 0 && u >= BUMP_REQUEST_NR) {
-                r = 0;
-                goto finish;
-        }
-
-        free(line);
-        line = NULL;
-
-        if (asprintf(&line, "%u", BUMP_REQUEST_NR) < 0) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = write_string_file(ap, line);
-        if (r < 0)
-                goto finish;
-
-        log_info("Bumped block_nr parameter of %u:%u to %u. This is a temporary hack and should be removed one day.", major(d), minor(d), BUMP_REQUEST_NR);
-        r = 1;
-
-finish:
-        free(ap);
-        free(line);
-
-        return r;
-}
-
-int block_get_readahead(const char *p, uint64_t *bytes) {
-        struct stat st;
-        char *ap = NULL, *line = NULL;
-        int r;
-        dev_t d;
-        uint64_t u;
-
-        assert(p);
-        assert(bytes);
-
-        if (stat(p, &st) < 0)
-                return -errno;
-
-        if (major(st.st_dev) == 0)
-                return 0;
-
-        d = st.st_dev;
-        block_get_whole_disk(d, &d);
-
-        if (asprintf(&ap, "/sys/dev/block/%u:%u/bdi/read_ahead_kb", major(d), minor(d)) < 0) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = read_one_line_file(ap, &line);
-        if (r < 0)
-                goto finish;
-
-        r = safe_atou64(line, &u);
-        if (r < 0)
-                goto finish;
-
-        *bytes = u * 1024ULL;
-
-finish:
-        free(ap);
-        free(line);
-
-        return r;
-}
-
-int block_set_readahead(const char *p, uint64_t bytes) {
-        struct stat st;
-        char *ap = NULL, *line = NULL;
-        int r;
-        dev_t d;
-
-        assert(p);
-        assert(bytes);
-
-        if (stat(p, &st) < 0)
-                return -errno;
-
-        if (major(st.st_dev) == 0)
-                return 0;
-
-        d = st.st_dev;
-        block_get_whole_disk(d, &d);
-
-        if (asprintf(&ap, "/sys/dev/block/%u:%u/bdi/read_ahead_kb", major(d), minor(d)) < 0) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (asprintf(&line, "%llu", bytes / 1024ULL) < 0) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = write_string_file(ap, line);
-        if (r < 0)
-                goto finish;
-
-finish:
-        free(ap);
-        free(line);
-
-        return r;
-}
diff --git a/src/readahead/readahead-common.h b/src/readahead/readahead-common.h
deleted file mode 100644
index b34f3aadd7..0000000000
--- a/src/readahead/readahead-common.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#pragma once
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include "macro.h"
-#include "util.h"
-
-#define READAHEAD_FILE_SIZE_MAX (10*1024*1024)
-
-#define READAHEAD_PACK_FILE_VERSION ";VERSION=2\n"
-
-extern unsigned arg_files_max;
-extern off_t arg_file_size_max;
-extern usec_t arg_timeout;
-
-int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st);
-
-int fs_on_ssd(const char *p);
-int fs_on_read_only(const char *p);
-
-bool enough_ram(void);
-
-int open_inotify(void);
-
-typedef struct ReadaheadShared {
-        pid_t collect;
-        pid_t replay;
-} _packed_ ReadaheadShared;
-
-ReadaheadShared *shared_get(void);
-
-int block_bump_request_nr(const char *p);
-
-int block_get_readahead(const char *p, uint64_t *bytes);
-int block_set_readahead(const char *p, uint64_t bytes);
-
-int main_collect(const char *root);
-int main_replay(const char *root);
-int main_analyze(const char *pack_path);
diff --git a/src/readahead/readahead-replay.c b/src/readahead/readahead-replay.c
deleted file mode 100644
index f81e0fe55d..0000000000
--- a/src/readahead/readahead-replay.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <linux/limits.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <sys/inotify.h>
-
-#include "systemd/sd-daemon.h"
-
-#include "missing.h"
-#include "util.h"
-#include "set.h"
-#include "ioprio.h"
-#include "readahead-common.h"
-#include "virt.h"
-
-static ReadaheadShared *shared = NULL;
-
-static int unpack_file(FILE *pack) {
-        _cleanup_close_ int fd = -1;
-        char fn[PATH_MAX];
-        bool any = false;
-        struct stat st;
-        uint64_t inode;
-
-        assert(pack);
-
-        if (!fgets(fn, sizeof(fn), pack))
-                return 0;
-
-        char_array_0(fn);
-        truncate_nl(fn);
-
-        fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOATIME|O_NOCTTY|O_NOFOLLOW);
-        if (fd < 0) {
-                if (errno != ENOENT && errno != EPERM && errno != EACCES && errno != ELOOP)
-                        log_warning("open(%s) failed: %m", fn);
-
-        } else if (file_verify(fd, fn, arg_file_size_max, &st) <= 0)
-                fd = safe_close(fd);
-
-        if (fread(&inode, sizeof(inode), 1, pack) != 1) {
-                log_error("Premature end of pack file.");
-                return -EIO;
-        }
-
-        if (fd >= 0) {
-                /* If the inode changed the file got deleted, so just
-                 * ignore this entry */
-                if (st.st_ino != (uint64_t) inode)
-                        fd = safe_close(fd);
-        }
-
-        for (;;) {
-                uint32_t b, c;
-
-                if (fread(&b, sizeof(b), 1, pack) != 1 ||
-                    fread(&c, sizeof(c), 1, pack) != 1) {
-                        log_error("Premature end of pack file.");
-                        return -EIO;
-                }
-
-                if (b == 0 && c == 0)
-                        break;
-
-                if (c <= b) {
-                        log_error("Invalid pack file.");
-                        return -EIO;
-                }
-
-                log_debug("%s: page %u to %u", fn, b, c);
-
-                any = true;
-
-                if (fd >= 0) {
-                        if (posix_fadvise(fd, b * page_size(), (c - b) * page_size(), POSIX_FADV_WILLNEED) < 0) {
-                                log_warning("posix_fadvise() failed: %m");
-                                return -errno;
-                        }
-                }
-        }
-
-        if (!any && fd >= 0) {
-                /* if no range is encoded in the pack file this is
-                 * intended to mean that the whole file shall be
-                 * read */
-
-                if (posix_fadvise(fd, 0, st.st_size, POSIX_FADV_WILLNEED) < 0) {
-                        log_warning("posix_fadvise() failed: %m");
-                        return -errno;
-                }
-        }
-
-        return 0;
-}
-
-static int replay(const char *root) {
-        _cleanup_close_ int inotify_fd = -1;
-        _cleanup_free_ char *pack_fn = NULL;
-        _cleanup_fclose_ FILE *pack = NULL;
-        bool on_ssd, ready = false;
-        char line[LINE_MAX];
-        int prio, c;
-
-        assert(root);
-
-        block_bump_request_nr(root);
-
-        if (asprintf(&pack_fn, "%s/.readahead", root) < 0)
-                return log_oom();
-
-        pack = fopen(pack_fn, "re");
-        if (!pack) {
-                if (errno == ENOENT) {
-                        log_debug("No pack file found.");
-                        return 0;
-                }
-
-                log_error("Failed to open pack file: %m");
-                return -errno;
-        }
-
-        posix_fadvise(fileno(pack), 0, 0, POSIX_FADV_WILLNEED);
-
-        inotify_fd = open_inotify();
-        if (inotify_fd < 0)
-                return inotify_fd;
-
-        if (!fgets(line, sizeof(line), pack)) {
-                log_error("Premature end of pack file.");
-                return -EIO;
-        }
-
-        char_array_0(line);
-
-        if (!streq(line, CANONICAL_HOST READAHEAD_PACK_FILE_VERSION)) {
-                log_debug("Pack file host or version type mismatch.");
-                goto done;
-        }
-
-        c = getc(pack);
-        if (c == EOF) {
-                log_debug("Premature end of pack file.");
-                return -EIO;
-        }
-
-        /* We do not retest SSD here, so that we can start replaying
-         * before udev is up.*/
-        on_ssd = c == 'S';
-        log_debug("On SSD: %s", yes_no(on_ssd));
-
-        if (on_ssd)
-                prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0);
-        else
-                /* We are not using RT here, since we'd starve IO that
-                we didn't record (which is for example blkid, since
-                its disk accesses go directly to the block device and
-                are thus not visible in fallocate) to death. However,
-                we do ask for an IO prio that is slightly higher than
-                the default (which is BE. 4) */
-                prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 2);
-
-        if (ioprio_set(IOPRIO_WHO_PROCESS, getpid(), prio) < 0)
-                log_warning("Failed to set IDLE IO priority class: %m");
-
-        sd_notify(0, "STATUS=Replaying readahead data");
-
-        log_debug("Replaying...");
-
-        if (access("/run/systemd/readahead/noreplay", F_OK) >= 0) {
-                log_debug("Got termination request");
-                goto done;
-        }
-
-        while (!feof(pack) && !ferror(pack)) {
-                uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX];
-                int k;
-                ssize_t n;
-
-                n = read(inotify_fd, &inotify_buffer, sizeof(inotify_buffer));
-                if (n < 0) {
-                        if (errno != EINTR && errno != EAGAIN) {
-                                log_error("Failed to read inotify event: %m");
-                                return -errno;
-                        }
-                } else {
-                        struct inotify_event *e = (struct inotify_event*) inotify_buffer;
-
-                        while (n > 0) {
-                                size_t step;
-
-                                if ((e->mask & IN_CREATE) && streq(e->name, "noreplay")) {
-                                        log_debug("Got termination request");
-                                        goto done;
-                                }
-
-                                step = sizeof(struct inotify_event) + e->len;
-                                assert(step <= (size_t) n);
-
-                                e = (struct inotify_event*) ((uint8_t*) e + step);
-                                n -= step;
-                        }
-                }
-
-                k = unpack_file(pack);
-                if (k < 0)
-                        return k;
-
-                if (!ready) {
-                        /* We delay the ready notification until we
-                         * queued at least one read */
-                        sd_notify(0, "READY=1");
-                        ready = true;
-                }
-        }
-
-done:
-        if (ferror(pack)) {
-                log_error("Failed to read pack file.");
-                return -EIO;
-        }
-
-        if (!ready)
-                sd_notify(0, "READY=1");
-
-        log_debug("Done.");
-        return 0;
-}
-
-int main_replay(const char *root) {
-
-        if (!root)
-                root = "/";
-
-        if (!enough_ram()) {
-                log_info("Disabling readahead replay due to low memory.");
-                return EXIT_SUCCESS;
-        }
-
-        shared = shared_get();
-        if (!shared)
-                return EXIT_FAILURE;
-
-        shared->replay = getpid();
-        __sync_synchronize();
-
-        if (replay(root) < 0)
-                return EXIT_FAILURE;
-
-        return EXIT_SUCCESS;
-}
diff --git a/src/readahead/readahead.c b/src/readahead/readahead.c
deleted file mode 100644
index 35176e9379..0000000000
--- a/src/readahead/readahead.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2012 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdio.h>
-#include <getopt.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#include "util.h"
-#include "def.h"
-#include "build.h"
-#include "readahead-common.h"
-
-unsigned arg_files_max = 16*1024;
-off_t arg_file_size_max = READAHEAD_FILE_SIZE_MAX;
-usec_t arg_timeout = 2*USEC_PER_MINUTE;
-
-static void help(void) {
-        printf("%1$s [OPTIONS...] collect [DIRECTORY]\n\n"
-               "Collect read-ahead data on early boot.\n\n"
-               "  -h --help                 Show this help\n"
-               "     --version              Show package version\n"
-               "     --files-max=INT        Maximum number of files to read ahead\n"
-               "     --file-size-max=BYTES  Maximum size of files to read ahead\n"
-               "     --timeout=USEC         Maximum time to spend collecting data\n"
-               "\n\n"
-               "%1$s [OPTIONS...] replay [DIRECTORY]\n\n"
-               "Replay collected read-ahead data on early boot.\n\n"
-               "  -h --help                 Show this help\n"
-               "     --version              Show package version\n"
-               "     --file-size-max=BYTES  Maximum size of files to read ahead\n"
-               "\n\n"
-               "%1$s [OPTIONS...] analyze [PACK-FILE]\n\n"
-               "Analyze collected read-ahead data.\n\n"
-               "  -h --help                 Show this help\n"
-               "     --version              Show package version\n",
-               program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
-        enum {
-                ARG_VERSION = 0x100,
-                ARG_FILES_MAX,
-                ARG_FILE_SIZE_MAX,
-                ARG_TIMEOUT
-        };
-
-        static const struct option options[] = {
-                { "help",          no_argument,       NULL, 'h'                },
-                { "version",       no_argument,       NULL, ARG_VERSION        },
-                { "files-max",     required_argument, NULL, ARG_FILES_MAX      },
-                { "file-size-max", required_argument, NULL, ARG_FILE_SIZE_MAX  },
-                { "timeout",       required_argument, NULL, ARG_TIMEOUT        },
-                {}
-        };
-
-        int c;
-
-        assert(argc >= 0);
-        assert(argv);
-
-        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
-
-                switch (c) {
-
-                case 'h':
-                        help();
-                        return 0;
-
-                case ARG_VERSION:
-                        puts(PACKAGE_STRING);
-                        puts(SYSTEMD_FEATURES);
-                        return 0;
-
-                case ARG_FILES_MAX:
-                        if (safe_atou(optarg, &arg_files_max) < 0 || arg_files_max <= 0) {
-                                log_error("Failed to parse maximum number of files %s.", optarg);
-                                return -EINVAL;
-                        }
-                        break;
-
-                case ARG_FILE_SIZE_MAX: {
-                        unsigned long long ull;
-
-                        if (safe_atollu(optarg, &ull) < 0 || ull <= 0) {
-                                log_error("Failed to parse maximum file size %s.", optarg);
-                                return -EINVAL;
-                        }
-
-                        arg_file_size_max = (off_t) ull;
-                        break;
-                }
-
-                case ARG_TIMEOUT:
-                        if (parse_sec(optarg, &arg_timeout) < 0 || arg_timeout <= 0) {
-                                log_error("Failed to parse timeout %s.", optarg);
-                                return -EINVAL;
-                        }
-
-                        break;
-
-                case '?':
-                        return -EINVAL;
-
-                default:
-                        assert_not_reached("Unhandled option");
-                }
-
-        if (optind != argc-1 &&
-            optind != argc-2) {
-                log_error("%s: wrong number of arguments.",
-                          program_invocation_short_name);
-                return -EINVAL;
-        }
-
-        return 1;
-}
-
-int main(int argc, char *argv[]) {
-        int r;
-
-        log_set_target(LOG_TARGET_SAFE);
-        log_parse_environment();
-        log_open();
-
-        umask(0022);
-
-        r = parse_argv(argc, argv);
-        if (r <= 0)
-                return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-
-        if (streq(argv[optind], "collect"))
-                return main_collect(argv[optind+1]);
-        else if (streq(argv[optind], "replay"))
-                return main_replay(argv[optind+1]);
-        else if (streq(argv[optind], "analyze"))
-                return main_analyze(argv[optind+1]);
-
-        log_error("Unknown verb %s.", argv[optind]);
-        return EXIT_FAILURE;
-}
diff --git a/src/readahead/sd-readahead.c b/src/readahead/sd-readahead.c
deleted file mode 100644
index 675d82cdd1..0000000000
--- a/src/readahead/sd-readahead.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  Copyright 2010 Lennart Poettering
-
-  Permission is hereby granted, free of charge, to any person
-  obtaining a copy of this software and associated documentation files
-  (the "Software"), to deal in the Software without restriction,
-  including without limitation the rights to use, copy, modify, merge,
-  publish, distribute, sublicense, and/or sell copies of the Software,
-  and to permit persons to whom the Software is furnished to do so,
-  subject to the following conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-  SOFTWARE.
-***/
-
-#ifndef _GNU_SOURCE
-#  define _GNU_SOURCE
-#endif
-
-#include <unistd.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <string.h>
-
-#include "sd-readahead.h"
-
-#if (__GNUC__ >= 4)
-#  ifdef SD_EXPORT_SYMBOLS
-/* Export symbols */
-#    define _sd_export_ __attribute__ ((visibility("default")))
-#  else
-/* Don't export the symbols */
-#    define _sd_export_ __attribute__ ((visibility("hidden")))
-#  endif
-#else
-#  define _sd_export_
-#endif
-
-static int touch(const char *path) {
-
-#if !defined(DISABLE_SYSTEMD) && defined(__linux__)
-        int fd;
-
-        mkdir("/run/systemd", 0755);
-        mkdir("/run/systemd/readahead", 0755);
-
-        fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666);
-        if (fd < 0)
-                return -errno;
-
-        for (;;) {
-                if (close(fd) >= 0)
-                        break;
-
-                if (errno != EINTR)
-                        return -errno;
-        }
-
-#endif
-        return 0;
-}
-
-_sd_export_ int sd_readahead(const char *action) {
-
-        if (!action)
-                return -EINVAL;
-
-        if (strcmp(action, "cancel") == 0)
-                return touch("/run/systemd/readahead/cancel");
-        else if (strcmp(action, "done") == 0)
-                return touch("/run/systemd/readahead/done");
-        else if (strcmp(action, "noreplay") == 0)
-                return touch("/run/systemd/readahead/noreplay");
-
-        return -EINVAL;
-}
diff --git a/src/readahead/test-ssd.c b/src/readahead/test-ssd.c
deleted file mode 100644
index 808faf359c..0000000000
--- a/src/readahead/test-ssd.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2014 Zbigniew Jędrzejewski-Szmek
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "readahead-common.h"
-
-int main(int argc, char *argv[]) {
-        int i;
-
-        for (i = 1; i < argc; i++) {
-                char *name = argv[i];
-                int r;
-
-                r = fs_on_ssd(name);
-                if (r < 0) {
-                        log_error("%s: %s", name, strerror(-r));
-                        return EXIT_FAILURE;
-                }
-
-                log_info("%s: %s", name, r ? "SSD" : "---");
-        }
-
-        return EXIT_SUCCESS;
-}
diff --git a/src/systemd/sd-readahead.h b/src/systemd/sd-readahead.h
deleted file mode 100644
index bb30f9a45e..0000000000
--- a/src/systemd/sd-readahead.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#ifndef foosdreadaheadhfoo
-#define foosdreadaheadhfoo
-
-/***
-  Copyright 2010 Lennart Poettering
-
-  Permission is hereby granted, free of charge, to any person
-  obtaining a copy of this software and associated documentation files
-  (the "Software"), to deal in the Software without restriction,
-  including without limitation the rights to use, copy, modify, merge,
-  publish, distribute, sublicense, and/or sell copies of the Software,
-  and to permit persons to whom the Software is furnished to do so,
-  subject to the following conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-  SOFTWARE.
-***/
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
-  Reference implementation of a few boot read-ahead-related
-  interfaces. These interfaces are trivial to implement. To simplify
-  porting, we provide this reference implementation. Applications are
-  welcome to reimplement the algorithms described here if they do not
-  want to include these two source files.
-
-  You may compile this with -DDISABLE_SYSTEMD to disable systemd
-  support. This makes all calls NOPs.
-
-  Because this is drop-in code, we don't want any of our symbols to be
-  exported in any case. Hence, we declare hidden visibility for all of
-  them.
-
-  You may find an up-to-date version of these source files online:
-
-  http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-readahead.h
-  http://cgit.freedesktop.org/systemd/systemd/plain/src/readahead/sd-readahead.c
-
-  This should compile on non-Linux systems too, but all functions
-  will become NOPs.
-
-  See sd-readahead(3) for more information.
-*/
-
-/*
-  Controls on-going disk read-ahead operations during boot-up. The argument
-  must be one of the following strings: "cancel", "done", or "noreplay".
-
-  cancel = terminate read-ahead data collection, and drop collected information
-  done = terminate read-ahead data collection, and keep collected information
-  noreplay = terminate read-ahead replay
-*/
-int sd_readahead(const char *action);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif