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author | Miklos Szeredi <miklos@szeredi.hu> | 2006-01-17 06:14:38 (GMT) |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-17 07:15:30 (GMT) |
commit | 0cd5b88553acf0611474dbaf8e43770eed268060 (patch) | |
tree | f3b08ab3a4a1cb42d92e2997f60f30d945601600 /fs/fuse/dev.c | |
parent | f543f253f3aa721a24557d7df8259145bb01b734 (diff) | |
download | linux-fsl-qoriq-0cd5b88553acf0611474dbaf8e43770eed268060.tar.xz |
[PATCH] fuse: add number of waiting requests attribute
This patch adds the 'waiting' attribute which indicates how many filesystem
requests are currently waiting to be completed. A non-zero value without any
filesystem activity indicates a hung or deadlocked filesystem.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse/dev.c')
-rw-r--r-- | fs/fuse/dev.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index de4a0a0..c72e44b 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -109,18 +109,24 @@ struct fuse_req *fuse_get_request(struct fuse_conn *fc) int intr; sigset_t oldset; + atomic_inc(&fc->num_waiting); block_sigs(&oldset); intr = down_interruptible(&fc->outstanding_sem); restore_sigs(&oldset); - return intr ? NULL : do_get_request(fc); + if (intr) { + atomic_dec(&fc->num_waiting); + return NULL; + } + return do_get_request(fc); } static void fuse_putback_request(struct fuse_conn *fc, struct fuse_req *req) { spin_lock(&fuse_lock); - if (req->preallocated) + if (req->preallocated) { + atomic_dec(&fc->num_waiting); list_add(&req->list, &fc->unused_list); - else + } else fuse_request_free(req); /* If we are in debt decrease that first */ |