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authorEric Paris <eparis@redhat.com>2010-07-28 18:18:37 +0400
committerEric Paris <eparis@redhat.com>2010-07-28 18:18:49 +0400
commit8c1934c8d70b22ca8333b216aec6c7d09fdbd6a6 (patch)
tree25fffb46e0b1594aa692ed10e755b6ae041022bc /include/linux/inotify.h
parent611da04f7a31b2208e838be55a42c7a1310ae321 (diff)
downloadlinux-8c1934c8d70b22ca8333b216aec6c7d09fdbd6a6.tar.xz
inotify: allow users to request not to recieve events on unlinked children
An inotify watch on a directory will send events for children even if those children have been unlinked. This patch add a new inotify flag IN_EXCL_UNLINK which allows a watch to specificy they don't care about unlinked children. This should fix performance problems seen by tasks which add a watch to /tmp and then are overrun with events when other processes are reading and writing to unlinked files they created in /tmp. https://bugzilla.kernel.org/show_bug.cgi?id=16296 Requested-by: Matthias Clasen <mclasen@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'include/linux/inotify.h')
-rw-r--r--include/linux/inotify.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/inotify.h b/include/linux/inotify.h
index 94d209a1b689..b74f2ef2c368 100644
--- a/include/linux/inotify.h
+++ b/include/linux/inotify.h
@@ -51,6 +51,7 @@ struct inotify_event {
/* special flags */
#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
+#define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */
#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
#define IN_ISDIR 0x40000000 /* event occurred against dir */
#define IN_ONESHOT 0x80000000 /* only send event once */