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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /fs/f2fs/checkpoint.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'fs/f2fs/checkpoint.c')
-rw-r--r--fs/f2fs/checkpoint.c56
1 files changed, 26 insertions, 30 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index a5e17a2a0..b70bbe1a6 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -52,9 +52,11 @@ struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
struct address_space *mapping = META_MAPPING(sbi);
struct page *page;
struct f2fs_io_info fio = {
+ .sbi = sbi,
.type = META,
.rw = READ_SYNC | REQ_META | REQ_PRIO,
.blk_addr = index,
+ .encrypted_page = NULL,
};
repeat:
page = grab_cache_page(mapping, index);
@@ -65,7 +67,9 @@ repeat:
if (PageUptodate(page))
goto out;
- if (f2fs_submit_page_bio(sbi, page, &fio))
+ fio.page = page;
+
+ if (f2fs_submit_page_bio(&fio))
goto repeat;
lock_page(page);
@@ -77,8 +81,7 @@ out:
return page;
}
-static inline bool is_valid_blkaddr(struct f2fs_sb_info *sbi,
- block_t blkaddr, int type)
+bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
{
switch (type) {
case META_NAT:
@@ -118,8 +121,10 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type
struct page *page;
block_t blkno = start;
struct f2fs_io_info fio = {
+ .sbi = sbi,
.type = META,
- .rw = READ_SYNC | REQ_META | REQ_PRIO
+ .rw = READ_SYNC | REQ_META | REQ_PRIO,
+ .encrypted_page = NULL,
};
for (; nrpages-- > 0; blkno++) {
@@ -161,7 +166,8 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type
continue;
}
- f2fs_submit_page_mbio(sbi, page, &fio);
+ fio.page = page;
+ f2fs_submit_page_mbio(&fio);
f2fs_put_page(page, 0);
}
out:
@@ -510,7 +516,12 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
grab_meta_page(sbi, start_blk + index);
index = 1;
- spin_lock(&im->ino_lock);
+
+ /*
+ * we don't need to do spin_lock(&im->ino_lock) here, since all the
+ * orphan inode operations are covered under f2fs_lock_op().
+ * And, spin_lock should be avoided due to page operations below.
+ */
head = &im->ino_list;
/* loop for each orphan inode entry and write them in Jornal block */
@@ -550,8 +561,6 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
set_page_dirty(page);
f2fs_put_page(page, 1);
}
-
- spin_unlock(&im->ino_lock);
}
static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
@@ -879,10 +888,8 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
nid_t last_nid = nm_i->next_scan_nid;
block_t start_blk;
- struct page *cp_page;
unsigned int data_sum_blocks, orphan_blocks;
__u32 crc32 = 0;
- void *kaddr;
int i;
int cp_payload_blks = __cp_payload(sbi);
@@ -979,19 +986,11 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
start_blk = __start_cp_addr(sbi);
/* write out checkpoint buffer at block 0 */
- cp_page = grab_meta_page(sbi, start_blk++);
- kaddr = page_address(cp_page);
- memcpy(kaddr, ckpt, F2FS_BLKSIZE);
- set_page_dirty(cp_page);
- f2fs_put_page(cp_page, 1);
-
- for (i = 1; i < 1 + cp_payload_blks; i++) {
- cp_page = grab_meta_page(sbi, start_blk++);
- kaddr = page_address(cp_page);
- memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, F2FS_BLKSIZE);
- set_page_dirty(cp_page);
- f2fs_put_page(cp_page, 1);
- }
+ update_meta_page(sbi, ckpt, start_blk++);
+
+ for (i = 1; i < 1 + cp_payload_blks; i++)
+ update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
+ start_blk++);
if (orphan_num) {
write_orphan_inodes(sbi, start_blk);
@@ -1006,11 +1005,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
}
/* writeout checkpoint block */
- cp_page = grab_meta_page(sbi, start_blk);
- kaddr = page_address(cp_page);
- memcpy(kaddr, ckpt, F2FS_BLKSIZE);
- set_page_dirty(cp_page);
- f2fs_put_page(cp_page, 1);
+ update_meta_page(sbi, ckpt, start_blk);
/* wait for previous submitted node/meta pages writeback */
wait_on_all_pages_writeback(sbi);
@@ -1036,7 +1031,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
if (unlikely(f2fs_cp_error(sbi)))
return;
- clear_prefree_segments(sbi);
+ clear_prefree_segments(sbi, cpc);
clear_sbi_flag(sbi, SBI_IS_DIRTY);
}
@@ -1051,7 +1046,8 @@ void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
mutex_lock(&sbi->cp_mutex);
if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
- (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC))
+ (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC ||
+ (cpc->reason == CP_DISCARD && !sbi->discard_blks)))
goto out;
if (unlikely(f2fs_cp_error(sbi)))
goto out;