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[PATCH] f_count may wrap around

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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>
This commit is contained in:
Al Viro
2008-07-26 00:39:17 -04:00
parent 3c333937ee
commit 516e0cc564
11 changed files with 27 additions and 39 deletions
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fs/hfsplus/inode.c
-4
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@@ -254,8 +254,6 @@ static int hfsplus_file_open(struct inode *inode, struct file *file)
{
if (HFSPLUS_IS_RSRC(inode))
inode = HFSPLUS_I(inode).rsrc_inode;
if (atomic_read(&file->f_count) != 1)
return 0;
atomic_inc(&HFSPLUS_I(inode).opencnt);
return 0;
}
@@ -266,8 +264,6 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
if (HFSPLUS_IS_RSRC(inode))
inode = HFSPLUS_I(inode).rsrc_inode;
if (atomic_read(&file->f_count) != 0)
return 0;
if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
mutex_lock(&inode->i_mutex);
hfsplus_file_truncate(inode);