linux-stable.git/include/linux/inotify.h, branch linux-2.6.25.y

[PATCH] new helper - inotify_evict_watch()

2007-10-21T06:37:38+00:00

Kicks the watch out without dropping it.  Called under ->inotify_mutex

Signed-off-by: Al Viro

[PATCH] new helper - inotify_clone_watch()

2007-10-21T06:37:32+00:00

Signed-off-by: Al Viro

[PATCH] inotify (4/5): allow watch removal from event handler

2006-06-20T09:25:19+00:00

Allow callers to remove watches from their event handler via
inotify_remove_watch_locked().  This functionality can be used to
achieve IN_ONESHOT-like functionality for a subset of events in the
mask.

Signed-off-by: Amy Griffis 
Acked-by: Robert Love 
Acked-by: John McCutchan 
Signed-off-by: Al Viro

[PATCH] inotify (3/5): add interfaces to kernel API

2006-06-20T09:25:18+00:00

Add inotify_init_watch() so caller can use inotify_watch refcounts
before calling inotify_add_watch().

Add inotify_find_watch() to find an existing watch for an (ih,inode)
pair.  This is similar to inotify_find_update_watch(), but does not
update the watch's mask if one is found.

Add inotify_rm_watch() to remove a watch via the watch pointer instead
of the watch descriptor.

Signed-off-by: Amy Griffis 
Acked-by: Robert Love 
Acked-by: John McCutchan 
Signed-off-by: Al Viro

[PATCH] inotify (2/5): add name's inode to event handler

2006-06-20T09:25:18+00:00

When an inotify event includes a dentry name, also include the inode
associated with that name.

Signed-off-by: Amy Griffis 
Acked-by: Robert Love 
Acked-by: John McCutchan 
Signed-off-by: Al Viro

[PATCH] inotify (1/5): split kernel API from userspace support

2006-06-20T09:25:17+00:00

The following series of patches introduces a kernel API for inotify,
making it possible for kernel modules to benefit from inotify's
mechanism for watching inodes.  With these patches, inotify will
maintain for each caller a list of watches (via an embedded struct
inotify_watch), where each inotify_watch is associated with a
corresponding struct inode.  The caller registers an event handler and
specifies for which filesystem events their event handler should be
called per inotify_watch.

Signed-off-by: Amy Griffis 
Acked-by: Robert Love 
Acked-by: John McCutchan 
Signed-off-by: Al Viro

[PATCH] remove config.h from inotify.h

2006-06-20T09:25:17+00:00

Signed-off-by: Al Viro

[PATCH] inotify: lock avoidance with parent watch status in dentry

2006-03-25T16:22:53+00:00

Previous inotify work avoidance is good when inotify is completely unused,
but it breaks down if even a single watch is in place anywhere in the
system.  Robin Holt notices that udev is one such culprit - it slows down a
512-thread application on a 512 CPU system from 6 seconds to 22 minutes.

Solve this by adding a flag in the dentry that tells inotify whether or not
its parent inode has a watch on it.  Event queueing to parent will skip
taking locks if this flag is cleared.  Setting and clearing of this flag on
all child dentries versus event delivery: this is no in terms of race
cases, and that was shown to be equivalent to always performing the check.

The essential behaviour is that activity occuring _after_ a watch has been
added and _before_ it has been removed, will generate events.

Signed-off-by: Nick Piggin 
Cc: Robert Love 
Cc: John McCutchan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] inotify: add two inotify_add_watch flags

2005-12-12T16:57:43+00:00

The below patch lets userspace have more control over the inodes that
inotify will watch.  It introduces two new flags.

        IN_ONLYDIR -- only watch the inode if it is a directory.
        This is needed to avoid the race that can occur when we want to be
        sure that we are watching a directory.

        IN_DONT_FOLLOW -- don't follow a symlink.  In combination
        with IN_ONLYDIR we can make sure that we don't watch the target of
        symlinks.

The issues the flags fix came up when writing the gnome-vfs inotify
backend.  Default behaviour is unchanged.

Signed-off-by: John McCutchan 
Acked-by: Robert Love 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] inotify: fix event loss on hardlinked files

2005-09-07T23:57:39+00:00

People have run into a problem when they do this:

watch (file1, all_events);
watch (file2, some_events);

if file2 is a hard link to file1, some events will be missed because by
default we replace the mask.  The patch below adds a flag IN_MASK_ADD which
will cause inotify to add to the existing mask if present.

Signed-off-by: John McCutchan 
Signed-off-by: Robert Love 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds