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authorShehjar Tikoo <shehjart@gluster.com>2010-09-17 06:32:01 +0000
committerVijay Bellur <vijay@dev.gluster.com>2010-09-17 06:24:01 -0700
commit4e6fb304ce41acbaf7c9ba67c06bf443e65082e8 (patch)
tree2c04c53628e3272346c37eed62f2bb961ae98c63 /xlators/nfs
parent941db02552773bcd6a3782e793fcbc41d4268697 (diff)
nfs3: Unref & unbind dir fd with inode lock on EOF
..so that when EOF is reached on this fd, any further requests on the same inode do not get handled through this fd but result in a new fd being opened. Unbinding results in the fd getting deleted from the inode's fd list. Signed-off-by: Shehjar Tikoo <shehjart@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1619 (glusterfs nfs server crashed on dht+replica(2x2)) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1619
Diffstat (limited to 'xlators/nfs')
-rw-r--r--xlators/nfs/server/src/nfs3.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/xlators/nfs/server/src/nfs3.c b/xlators/nfs/server/src/nfs3.c
index 0a55e55c9..2d5df5369 100644
--- a/xlators/nfs/server/src/nfs3.c
+++ b/xlators/nfs/server/src/nfs3.c
@@ -3885,6 +3885,17 @@ nfs3svc_readdir_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
stat = NFS3_OK;
nfs3err:
+
+ /* On end-of-directory, unref the fd to have it removed from the cache
+ * and also unbind it from the fd so that any subsequent request on the
+ * on the directory do not get this fd when fd_lookup is called in
+ * dir open resume path.
+ */
+ if (is_eof) {
+ gf_log (GF_NFS3, GF_LOG_TRACE, "EOF REF: %d", cs->fd->refcount);
+ fd_unref_unbind (cs->fd);
+ }
+
if (cs->maxcount == 0) {
nfs3_log_readdir_res (nfs_rpcsvc_request_xid (cs->req), stat,
op_errno, (uintptr_t)cs->fd,
@@ -3902,11 +3913,6 @@ nfs3err:
cs->maxcount, is_eof);
}
- if (is_eof) {
- gf_log (GF_NFS3, GF_LOG_TRACE, "EOF REF: %d", cs->fd->refcount);
- fd_unref (cs->fd);
- }
-
gf_log (GF_NFS3, GF_LOG_TRACE, "CS WIPE REF: %d", cs->fd->refcount);
nfs3_call_state_wipe (cs);
return 0;
@@ -3958,7 +3964,7 @@ err:
* so that next time the dir is read, we'll get any changed directory
* entries.
*/
- fd_unref (cs->fd);
+ fd_unref_unbind (cs->fd);
nfs3_call_state_wipe (cs);
ret:
return 0;