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authorMiklos Szeredi <miklos@szeredi.hu>2007-01-29 13:19:54 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-30 08:26:45 -0800
commitff79544754631cf3d237ff47b7d0e7ab2d211fcf (patch)
treeaec89c9cfbe2f0652b121188d6cefadd11dcf881 /fs/fuse/control.c
parent436d1654b341e55a73cada13cce3142b619f23bb (diff)
downloadlinux-ff79544754631cf3d237ff47b7d0e7ab2d211fcf.tar.gz
[PATCH] fuse: fix bug in control filesystem mount
The BUG in fuse_ctl_add_dentry() could be triggered if the control
filesystem was unmounted and mounted again while one or more fuse
filesystems were present.

The fix is to reset the dentry counter in fuse_ctl_kill_sb().

Bug reported by Florent Mertens.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fuse/control.c')
-rw-r--r--fs/fuse/control.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 8c58bd453993..1794305f9ed8 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -193,8 +193,12 @@ static int fuse_ctl_get_sb(struct file_system_type *fs_type, int flags,
 
 static void fuse_ctl_kill_sb(struct super_block *sb)
 {
+	struct fuse_conn *fc;
+
 	mutex_lock(&fuse_mutex);
 	fuse_control_sb = NULL;
+	list_for_each_entry(fc, &fuse_conn_list, entry)
+		fc->ctl_ndents = 0;
 	mutex_unlock(&fuse_mutex);
 
 	kill_litter_super(sb);