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author | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 15:34:58 -0500 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 15:34:58 -0500 |
commit | 86579dd06deecfa6ac88d5e84e4d63c397cd6f6d (patch) | |
tree | b4475d3ccde53015ad84a06e4e55e64591171b75 /fs/nfs/callback.c | |
parent | 7ea9ea832212c4a755650f7c7cc1ff0b63292a41 (diff) | |
parent | a0f067802576d4eb4c65d40b8ee7d6ea3c81dd61 (diff) | |
download | linux-stable-86579dd06deecfa6ac88d5e84e4d63c397cd6f6d.tar.gz linux-stable-86579dd06deecfa6ac88d5e84e4d63c397cd6f6d.tar.bz2 linux-stable-86579dd06deecfa6ac88d5e84e4d63c397cd6f6d.zip |
Merge branch 'master'
Diffstat (limited to 'fs/nfs/callback.c')
-rw-r--r-- | fs/nfs/callback.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index fcd97406a778..90c95adc8c1b 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -14,6 +14,7 @@ #include <linux/sunrpc/svc.h> #include <linux/sunrpc/svcsock.h> #include <linux/nfs_fs.h> +#include <linux/mutex.h> #include <net/inet_sock.h> @@ -31,7 +32,7 @@ struct nfs_callback_data { }; static struct nfs_callback_data nfs_callback_info; -static DECLARE_MUTEX(nfs_callback_sema); +static DEFINE_MUTEX(nfs_callback_mutex); static struct svc_program nfs4_callback_program; unsigned int nfs_callback_set_tcpport; @@ -55,7 +56,12 @@ static void nfs_callback_svc(struct svc_rqst *rqstp) complete(&nfs_callback_info.started); - while (nfs_callback_info.users != 0 || !signalled()) { + for(;;) { + if (signalled()) { + if (nfs_callback_info.users == 0) + break; + flush_signals(current); + } /* * Listen for a request on the socket */ @@ -73,6 +79,7 @@ static void nfs_callback_svc(struct svc_rqst *rqstp) svc_process(serv, rqstp); } + svc_exit_thread(rqstp); nfs_callback_info.pid = 0; complete(&nfs_callback_info.stopped); unlock_kernel(); @@ -89,7 +96,7 @@ int nfs_callback_up(void) int ret = 0; lock_kernel(); - down(&nfs_callback_sema); + mutex_lock(&nfs_callback_mutex); if (nfs_callback_info.users++ || nfs_callback_info.pid != 0) goto out; init_completion(&nfs_callback_info.started); @@ -115,7 +122,7 @@ int nfs_callback_up(void) nfs_callback_info.serv = serv; wait_for_completion(&nfs_callback_info.started); out: - up(&nfs_callback_sema); + mutex_unlock(&nfs_callback_mutex); unlock_kernel(); return ret; out_destroy: @@ -133,13 +140,15 @@ int nfs_callback_down(void) int ret = 0; lock_kernel(); - down(&nfs_callback_sema); - if (--nfs_callback_info.users || nfs_callback_info.pid == 0) - goto out; - kill_proc(nfs_callback_info.pid, SIGKILL, 1); - wait_for_completion(&nfs_callback_info.stopped); -out: - up(&nfs_callback_sema); + mutex_lock(&nfs_callback_mutex); + nfs_callback_info.users--; + do { + if (nfs_callback_info.users != 0 || nfs_callback_info.pid == 0) + break; + if (kill_proc(nfs_callback_info.pid, SIGKILL, 1) < 0) + break; + } while (wait_for_completion_timeout(&nfs_callback_info.stopped, 5*HZ) == 0); + mutex_unlock(&nfs_callback_mutex); unlock_kernel(); return ret; } |