Messages in this thread Patch in this message | | | Subject | [PATCH 2/3] fuse: skip blocking on allocations of synchronous requests | From | Maxim Patlasov <> | Date | Wed, 26 Dec 2012 16:44:55 +0400 |
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Miklos wrote:
> A task may have at most one synchronous request allocated. So these > requests need not be otherwise limited.
The patch re-works fuse_get_req() to follow this idea.
Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com> --- fs/fuse/dev.c | 21 +++++++++++++-------- 1 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 0b6b9d1..c7bef93 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -103,17 +103,22 @@ struct fuse_req *fuse_get_req_internal(struct fuse_conn *fc, bool for_background) { struct fuse_req *req; - sigset_t oldset; - int intr; int err; atomic_inc(&fc->num_waiting); - block_sigs(&oldset); - intr = wait_event_interruptible(fc->blocked_waitq, !fc->blocked); - restore_sigs(&oldset); - err = -EINTR; - if (intr) - goto out; + + if (for_background) { + sigset_t oldset; + int intr; + + block_sigs(&oldset); + intr = wait_event_interruptible(fc->blocked_waitq, + !fc->blocked); + restore_sigs(&oldset); + err = -EINTR; + if (intr) + goto out; + } err = -ENOTCONN; if (!fc->connected)
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