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| author | Latchesar Ionkov <lucho@ionkov.net> | 2007-04-23 14:41:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-24 08:23:08 -0700 |
| commit | c959df9f01cfb2f43b4d1f58631ee1e9c50541b6 (patch) | |
| tree | 79d8d52914ed1f8a96f124f267ebe44c1630e3b4 /fs/9p | |
| parent | f51a5a9de86a948b9a30daab90fb003f51446dcd (diff) | |
| download | lwn-c959df9f01cfb2f43b4d1f58631ee1e9c50541b6.tar.gz lwn-c959df9f01cfb2f43b4d1f58631ee1e9c50541b6.zip | |
v9fs: don't use primary fid when removing file
v9fs_insert uses v9fs_fid_lookup (which also locks the fid) to get the
primary fid associated with the dentry and destroys the v9fs_fid struct
after removing the file. If another process called v9fs_fid_lookup on the
same dentry, it may wait undefinitely for the fid's lock (as the struct is
freed).
This patch changes v9fs_remove to use a cloned fid, so the primary fid is
not locked and freed.
Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@hera.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/9p')
| -rw-r--r-- | fs/9p/vfs_inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 124a085d1f2e..b01b0a457932 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -415,7 +415,7 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) file_inode = file->d_inode; sb = file_inode->i_sb; v9ses = v9fs_inode2v9ses(file_inode); - v9fid = v9fs_fid_lookup(file); + v9fid = v9fs_fid_clone(file); if(IS_ERR(v9fid)) return PTR_ERR(v9fid); |