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| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-07-26 00:39:17 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-07-26 20:53:40 -0400 |
| commit | 516e0cc5646f377ab80fcc2ee639892eccb99853 (patch) | |
| tree | e06296dcedb42dbe397d237887873e70c5823d51 /include/linux/fs.h | |
| parent | 3c333937ee3be114b181c4861188cfe8f6a59697 (diff) | |
| download | lwn-516e0cc5646f377ab80fcc2ee639892eccb99853.tar.gz lwn-516e0cc5646f377ab80fcc2ee639892eccb99853.zip | |
[PATCH] f_count may wrap around
make it atomic_long_t; while we are at it, get rid of useless checks in affs,
hfs and hpfs - ->open() always has it equal to 1, ->release() - to 0.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 9d2de4cadabd..7676fa1c20ae 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -795,7 +795,7 @@ struct file { #define f_dentry f_path.dentry #define f_vfsmnt f_path.mnt const struct file_operations *f_op; - atomic_t f_count; + atomic_long_t f_count; unsigned int f_flags; mode_t f_mode; loff_t f_pos; @@ -824,8 +824,8 @@ extern spinlock_t files_lock; #define file_list_lock() spin_lock(&files_lock); #define file_list_unlock() spin_unlock(&files_lock); -#define get_file(x) atomic_inc(&(x)->f_count) -#define file_count(x) atomic_read(&(x)->f_count) +#define get_file(x) atomic_long_inc(&(x)->f_count) +#define file_count(x) atomic_long_read(&(x)->f_count) #ifdef CONFIG_DEBUG_WRITECOUNT static inline void file_take_write(struct file *f) |