diff options
| author | Eric Paris <eparis@redhat.com> | 2010-07-28 18:18:37 +0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-07-28 18:18:49 +0400 |
| commit | 8c1934c8d70b22ca8333b216aec6c7d09fdbd6a6 (patch) | |
| tree | 25fffb46e0b1594aa692ed10e755b6ae041022bc /include | |
| parent | 611da04f7a31b2208e838be55a42c7a1310ae321 (diff) | |
| download | linux-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')
| -rw-r--r-- | include/linux/fsnotify_backend.h | 1 | ||||
| -rw-r--r-- | include/linux/inotify.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index b9b3f24ad4fc..4b809fcd4996 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -44,6 +44,7 @@ #define FS_OPEN_PERM 0x00010000 /* open event in an permission hook */ #define FS_ACCESS_PERM 0x00020000 /* access event in a permissions hook */ +#define FS_EXCL_UNLINK 0x04000000 /* do not send events if object is unlinked */ #define FS_IN_ISDIR 0x40000000 /* event occurred against dir */ #define FS_IN_ONESHOT 0x80000000 /* only send event once */ 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 */ |