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authorScott Wolchok <swolchok@umich.edu>2012-12-20 15:05:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-20 17:40:21 -0800
commita68c2f12b4b28994aaf622bbe5724b7258cc2fcf (patch)
treec78116c77b068c3b57aa3bdddd40c2ecdd0d5a9f
parent891348ca0f66206f1dc0e30d63757e3df1ae2d15 (diff)
sendfile: allows bypassing of notifier events
do_sendfile() in fs/read_write.c does not call the fsnotify functions, unlike its neighbors. This manifests as a lack of inotify ACCESS events when a file is sent using sendfile(2). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=12812 [akpm@linux-foundation.org: use fsnotify_modify(out.file), not fsnotify_access(), per Dave] Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Scott Wolchok <swolchok@umich.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/read_write.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/read_write.c b/fs/read_write.c
index 1edaf099ddd7..bb34af315280 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -935,6 +935,8 @@ ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, size_t count,
if (retval > 0) {
add_rchar(current, retval);
add_wchar(current, retval);
+ fsnotify_access(in.file);
+ fsnotify_modify(out.file);
}
inc_syscr(current);