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fsnotify: fix check in inotify fdinfo printing

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A check in inotify_fdinfo() checking whether mark is valid was always
true due to a bug.  Luckily we can never get to invalidated marks since
we hold mark_mutex and invalidated marks get removed from the group list
when they are invalidated under that mutex.

Anyway fix the check to make code more future proof.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara 2015-09-04 15:43:03 -07:00 committed by Linus Torvalds
parent 7c49b86164
commit 3c53e51421
1 changed files with 2 additions and 1 deletions
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3
fs/notify/fdinfo.c
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@ -76,7 +76,8 @@ static void inotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
struct inotify_inode_mark *inode_mark;
struct inode *inode;
if (!(mark->flags & (FSNOTIFY_MARK_FLAG_ALIVE | FSNOTIFY_MARK_FLAG_INODE)))
if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE) ||
!(mark->flags & FSNOTIFY_MARK_FLAG_INODE))
return;
inode_mark = container_of(mark, struct inotify_inode_mark, fsn_mark);