lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fuse: fix reserved request wake up

Browse Source 
Use wake_up_all instead of wake_up in put_reserved_req(), otherwise it is
possible that the right task is not woken up.

Also create a separate reserved_req_waitq in addition to the blocked_waitq,
since they fulfill totally separate functions.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miklos Szeredi
2007-10-16 23:31:00 -07:00
committed by Linus Torvalds
parent f92b99b9dc
commit de5e3dec42
3 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/fuse/dev.c
View File

@@ -129,7 +129,7 @@ static struct fuse_req *get_reserved_req(struct fuse_conn *fc,
struct fuse_file *ff = file->private_data;
do {
wait_event(fc->blocked_waitq, ff->reserved_req);
wait_event(fc->reserved_req_waitq, ff->reserved_req);
spin_lock(&fc->lock);
if (ff->reserved_req) {
req = ff->reserved_req;
@@ -155,7 +155,7 @@ static void put_reserved_req(struct fuse_conn *fc, struct fuse_req *req)
fuse_request_init(req);
BUG_ON(ff->reserved_req);
ff->reserved_req = req;
wake_up(&fc->blocked_waitq);
wake_up_all(&fc->reserved_req_waitq);
spin_unlock(&fc->lock);
fput(file);
}