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(parent: cf43742) | patch
inotify: fix locking around inotify watching in the idr
authorEric Paris <eparis@redhat.com>
Mon, 24 Aug 2009 20:03:35 +0000 (16:03 -0400)
committerEric Paris <eparis@redhat.com>
Thu, 27 Aug 2009 12:02:04 +0000 (08:02 -0400)
commitdead537dd8a1c9495322c1d6f7c780697f474af0
tree5263cf56e792cfc5ddf37748d2868fce9866af68tree | snapshot
parentcf4374267fbe966e8e4e7db68f5dc7b267439780commit | diff
inotify: fix locking around inotify watching in the idr

The are races around the idr storage of inotify watches.  It's possible
that a watch could be found from sys_inotify_rm_watch() in the idr, but it
could be removed from the idr before that code does it's removal.  Move the
locking and the refcnt'ing so that these have to happen atomically.

Signed-off-by: Eric Paris <eparis@redhat.com>
fs/notify/inotify/inotify_user.c diff | blob | history
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