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authorPatrick McHardy <kaber@trash.net>2012-08-08 21:03:47 +0200
committerPatrick McHardy <kaber@trash.net>2012-08-08 21:03:47 +0200
commitd53b4ed072d9779cdf53582c46436dec06d0961f (patch)
treeac95ecab33e31cd79aae69c475e8348adac51230 /fs/file_table.c
parent5d4dff7f1011a81a693a9c7b1f6a0b9c842eb60c (diff)
parent28a33cbc24e4256c143dce96c7d93bf423229f92 (diff)
Merge tag 'v3.5' of 192.168.0.154:/repos/git/linux-2.6
Conflicts: drivers/Kconfig Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'fs/file_table.c')
-rw-r--r--fs/file_table.c43
1 files changed, 9 insertions, 34 deletions
diff --git a/fs/file_table.c b/fs/file_table.c
index c322794f736..a305d9e2d1b 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -34,7 +34,6 @@ struct files_stat_struct files_stat = {
.max_files = NR_FILE
};
-DECLARE_LGLOCK(files_lglock);
DEFINE_LGLOCK(files_lglock);
/* SLAB cache for file structures */
@@ -204,7 +203,7 @@ EXPORT_SYMBOL(alloc_file);
* to write to @file, along with access to write through
* its vfsmount.
*/
-void drop_file_write_access(struct file *file)
+static void drop_file_write_access(struct file *file)
{
struct vfsmount *mnt = file->f_path.mnt;
struct dentry *dentry = file->f_path.dentry;
@@ -219,7 +218,6 @@ void drop_file_write_access(struct file *file)
mnt_drop_write(mnt);
file_release_write(file);
}
-EXPORT_SYMBOL_GPL(drop_file_write_access);
/* the real guts of fput() - releasing the last reference to file
*/
@@ -422,9 +420,9 @@ static inline void __file_sb_list_add(struct file *file, struct super_block *sb)
*/
void file_sb_list_add(struct file *file, struct super_block *sb)
{
- lg_local_lock(files_lglock);
+ lg_local_lock(&files_lglock);
__file_sb_list_add(file, sb);
- lg_local_unlock(files_lglock);
+ lg_local_unlock(&files_lglock);
}
/**
@@ -437,9 +435,9 @@ void file_sb_list_add(struct file *file, struct super_block *sb)
void file_sb_list_del(struct file *file)
{
if (!list_empty(&file->f_u.fu_list)) {
- lg_local_lock_cpu(files_lglock, file_list_cpu(file));
+ lg_local_lock_cpu(&files_lglock, file_list_cpu(file));
list_del_init(&file->f_u.fu_list);
- lg_local_unlock_cpu(files_lglock, file_list_cpu(file));
+ lg_local_unlock_cpu(&files_lglock, file_list_cpu(file));
}
}
@@ -474,29 +472,6 @@ void file_sb_list_del(struct file *file)
#endif
-int fs_may_remount_ro(struct super_block *sb)
-{
- struct file *file;
- /* Check that no files are currently opened for writing. */
- lg_global_lock(files_lglock);
- do_file_list_for_each_entry(sb, file) {
- struct inode *inode = file->f_path.dentry->d_inode;
-
- /* File with pending delete? */
- if (inode->i_nlink == 0)
- goto too_bad;
-
- /* Writeable file? */
- if (S_ISREG(inode->i_mode) && (file->f_mode & FMODE_WRITE))
- goto too_bad;
- } while_file_list_for_each_entry;
- lg_global_unlock(files_lglock);
- return 1; /* Tis' cool bro. */
-too_bad:
- lg_global_unlock(files_lglock);
- return 0;
-}
-
/**
* mark_files_ro - mark all files read-only
* @sb: superblock in question
@@ -509,7 +484,7 @@ void mark_files_ro(struct super_block *sb)
struct file *f;
retry:
- lg_global_lock(files_lglock);
+ lg_global_lock(&files_lglock);
do_file_list_for_each_entry(sb, f) {
struct vfsmount *mnt;
if (!S_ISREG(f->f_path.dentry->d_inode->i_mode))
@@ -526,12 +501,12 @@ retry:
file_release_write(f);
mnt = mntget(f->f_path.mnt);
/* This can sleep, so we can't hold the spinlock. */
- lg_global_unlock(files_lglock);
+ lg_global_unlock(&files_lglock);
mnt_drop_write(mnt);
mntput(mnt);
goto retry;
} while_file_list_for_each_entry;
- lg_global_unlock(files_lglock);
+ lg_global_unlock(&files_lglock);
}
void __init files_init(unsigned long mempages)
@@ -549,6 +524,6 @@ void __init files_init(unsigned long mempages)
n = (mempages * (PAGE_SIZE / 1024)) / 10;
files_stat.max_files = max_t(unsigned long, n, NR_FILE);
files_defer_init();
- lg_lock_init(files_lglock);
+ lg_lock_init(&files_lglock, "files_lglock");
percpu_counter_init(&nr_files, 0);
}