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| author | Miklos Szeredi <mszeredi@suse.cz> | 2007-10-16 23:31:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:43:03 -0700 |
| commit | de5e3dec421c44c999071b8f7e0580ad2ade92ae (patch) | |
| tree | c327562a78335346704c382c5b220b13c9208589 /fs | |
| parent | f92b99b9dccb61760b345baf40ed37f59b91f8af (diff) | |
| download | linux-de5e3dec421c44c999071b8f7e0580ad2ade92ae.tar.gz linux-de5e3dec421c44c999071b8f7e0580ad2ade92ae.tar.bz2 linux-de5e3dec421c44c999071b8f7e0580ad2ade92ae.zip | |
fuse: fix reserved request wake up
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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fuse/dev.c | 4 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 3 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 2 |
3 files changed, 7 insertions, 2 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index ebc36f525eee..9c9e35e42bfd 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -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); } diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 9f4603beb9e8..95bcb433d1b4 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -289,6 +289,9 @@ struct fuse_conn { /** waitq for blocked connection */ wait_queue_head_t blocked_waitq; + /** waitq for reserved requests */ + wait_queue_head_t reserved_req_waitq; + /** The next unique request id */ u64 reqctr; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 807988445685..95c8a9738ca7 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -232,6 +232,7 @@ static void fuse_put_super(struct super_block *sb) kill_fasync(&fc->fasync, SIGIO, POLL_IN); wake_up_all(&fc->waitq); wake_up_all(&fc->blocked_waitq); + wake_up_all(&fc->reserved_req_waitq); mutex_lock(&fuse_mutex); list_del(&fc->entry); fuse_ctl_remove_conn(fc); @@ -410,6 +411,7 @@ static struct fuse_conn *new_conn(void) atomic_set(&fc->count, 1); init_waitqueue_head(&fc->waitq); init_waitqueue_head(&fc->blocked_waitq); + init_waitqueue_head(&fc->reserved_req_waitq); INIT_LIST_HEAD(&fc->pending); INIT_LIST_HEAD(&fc->processing); INIT_LIST_HEAD(&fc->io); |