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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /fs/aufs/finfo.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'fs/aufs/finfo.c')
-rw-r--r--fs/aufs/finfo.c143
1 files changed, 0 insertions, 143 deletions
diff --git a/fs/aufs/finfo.c b/fs/aufs/finfo.c
deleted file mode 100644
index b5eb55dfb..000000000
--- a/fs/aufs/finfo.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (C) 2005-2016 Junjiro R. Okajima
- */
-
-/*
- * file private data
- */
-
-#include "aufs.h"
-
-void au_hfput(struct au_hfile *hf, struct file *file)
-{
- /* todo: direct access f_flags */
- if (vfsub_file_flags(file) & __FMODE_EXEC)
- allow_write_access(hf->hf_file);
- fput(hf->hf_file);
- hf->hf_file = NULL;
- atomic_dec(&hf->hf_br->br_count);
- hf->hf_br = NULL;
-}
-
-void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val)
-{
- struct au_finfo *finfo = au_fi(file);
- struct au_hfile *hf;
- struct au_fidir *fidir;
-
- fidir = finfo->fi_hdir;
- if (!fidir) {
- AuDebugOn(finfo->fi_btop != bindex);
- hf = &finfo->fi_htop;
- } else
- hf = fidir->fd_hfile + bindex;
-
- if (hf && hf->hf_file)
- au_hfput(hf, file);
- if (val) {
- FiMustWriteLock(file);
- AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry));
- hf->hf_file = val;
- hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex);
- }
-}
-
-void au_update_figen(struct file *file)
-{
- atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry));
- /* smp_mb(); */ /* atomic_set */
-}
-
-/* ---------------------------------------------------------------------- */
-
-struct au_fidir *au_fidir_alloc(struct super_block *sb)
-{
- struct au_fidir *fidir;
- int nbr;
-
- nbr = au_sbend(sb) + 1;
- if (nbr < 2)
- nbr = 2; /* initial allocate for 2 branches */
- fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS);
- if (fidir) {
- fidir->fd_bbot = -1;
- fidir->fd_nent = nbr;
- }
-
- return fidir;
-}
-
-int au_fidir_realloc(struct au_finfo *finfo, int nbr)
-{
- int err;
- struct au_fidir *fidir, *p;
-
- AuRwMustWriteLock(&finfo->fi_rwsem);
- fidir = finfo->fi_hdir;
- AuDebugOn(!fidir);
-
- err = -ENOMEM;
- p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr),
- GFP_NOFS);
- if (p) {
- p->fd_nent = nbr;
- finfo->fi_hdir = p;
- err = 0;
- }
-
- return err;
-}
-
-/* ---------------------------------------------------------------------- */
-
-void au_finfo_fin(struct file *file)
-{
- struct au_finfo *finfo;
-
- au_nfiles_dec(file->f_path.dentry->d_sb);
-
- finfo = au_fi(file);
- AuDebugOn(finfo->fi_hdir);
- AuRwDestroy(&finfo->fi_rwsem);
- au_cache_free_finfo(finfo);
-}
-
-void au_fi_init_once(void *_finfo)
-{
- struct au_finfo *finfo = _finfo;
- static struct lock_class_key aufs_fi;
-
- au_rw_init(&finfo->fi_rwsem);
- au_rw_class(&finfo->fi_rwsem, &aufs_fi);
-}
-
-int au_finfo_init(struct file *file, struct au_fidir *fidir)
-{
- int err;
- struct au_finfo *finfo;
- struct dentry *dentry;
-
- err = -ENOMEM;
- dentry = file->f_path.dentry;
- finfo = au_cache_alloc_finfo();
- if (unlikely(!finfo))
- goto out;
-
- err = 0;
- au_nfiles_inc(dentry->d_sb);
- /* verbose coding for lock class name */
- if (!fidir)
- au_rw_class(&finfo->fi_rwsem, au_lc_key + AuLcNonDir_FIINFO);
- else
- au_rw_class(&finfo->fi_rwsem, au_lc_key + AuLcDir_FIINFO);
- au_rw_write_lock(&finfo->fi_rwsem);
- finfo->fi_btop = -1;
- finfo->fi_hdir = fidir;
- atomic_set(&finfo->fi_generation, au_digen(dentry));
- /* smp_mb(); */ /* atomic_set */
-
- file->private_data = finfo;
-
-out:
- return err;
-}