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authorAl Viro <viro@zeniv.linux.org.uk>2008-07-26 00:39:17 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-07-26 20:53:40 -0400
commit516e0cc5646f377ab80fcc2ee639892eccb99853 (patch)
treee06296dcedb42dbe397d237887873e70c5823d51 /include/linux
parent3c333937ee3be114b181c4861188cfe8f6a59697 (diff)
[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')
-rw-r--r--include/linux/fs.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9d2de4cadab..7676fa1c20a 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)