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authorRaghavendra G <raghavendra@zresearch.com>2009-07-09 00:27:57 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-07-16 00:37:47 -0700
commited9687b7fc050b6fcd8ef79eab977d1ef2f1e801 (patch)
tree410ebe14925b06c9833c997a3191c1cb4deb40f7
parent206e1af66adea885fcaf5ad02a510ac0deb36870 (diff)
quick-read: implement qr_fentrylk.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
-rw-r--r--xlators/performance/quick-read/src/quick-read.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c
index 4b2e58ea014..ae2adaccd9d 100644
--- a/xlators/performance/quick-read/src/quick-read.c
+++ b/xlators/performance/quick-read/src/quick-read.c
@@ -1547,6 +1547,105 @@ qr_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
}
+int32_t
+qr_fentrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno)
+{
+ STACK_UNWIND (frame, op_ret, op_errno);
+ return 0;
+}
+
+int32_t
+qr_fentrylk_helper (call_frame_t *frame, xlator_t *this, const char *volume,
+ fd_t *fd, const char *basename, entrylk_cmd cmd,
+ entrylk_type type)
+{
+ STACK_WIND(frame, qr_fentrylk_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->fentrylk, volume, fd, basename,
+ cmd, type);
+ return 0;
+}
+
+
+int32_t
+qr_fentrylk (call_frame_t *frame, xlator_t *this, const char *volume, fd_t *fd,
+ const char *basename, entrylk_cmd cmd, entrylk_type type)
+{
+ int flags = 0;
+ uint64_t value = 0;
+ call_stub_t *stub = NULL;
+ char *path = NULL;
+ loc_t loc = {0, };
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ int32_t ret = -1, op_ret = -1, op_errno = -1;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+
+ ret = fd_ctx_get (fd, this, &value);
+ if (ret == 0) {
+ qr_fd_ctx = (qr_fd_ctx_t *)(long)value;
+ }
+
+ if (qr_fd_ctx) {
+ LOCK (&qr_fd_ctx->lock);
+ {
+ path = qr_fd_ctx->path;
+ flags = qr_fd_ctx->flags;
+
+ if (!(qr_fd_ctx->opened
+ || qr_fd_ctx->open_in_transit)) {
+ need_open = 1;
+ qr_fd_ctx->open_in_transit = 1;
+ }
+
+ if (qr_fd_ctx->opened) {
+ can_wind = 1;
+ } else {
+ stub = fop_fentrylk_stub (frame,
+ qr_fentrylk_helper,
+ volume, fd, basename,
+ cmd, type);
+ if (stub == NULL) {
+ op_ret = -1;
+ op_errno = ENOMEM;
+ need_unwind = 1;
+ qr_fd_ctx->open_in_transit = 0;
+ goto unlock;
+ }
+
+ list_add_tail (&stub->list,
+ &qr_fd_ctx->waiting_ops);
+ }
+ }
+ unlock:
+ UNLOCK (&qr_fd_ctx->lock);
+ } else {
+ can_wind = 1;
+ }
+
+out:
+ if (need_unwind) {
+ STACK_UNWIND (frame, op_ret, op_errno);
+ } else if (can_wind) {
+ STACK_WIND (frame, qr_fentrylk_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->fentrylk, volume, fd,
+ basename, cmd, type);
+ } else if (need_open) {
+ op_ret = qr_loc_fill (&loc, fd->inode, path);
+ if (op_ret == -1) {
+ qr_resume_pending_ops (qr_fd_ctx);
+ goto out;
+ }
+
+ STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->open, &loc, flags, fd);
+
+ qr_loc_wipe (&loc);
+ }
+
+ return 0;
+}
+
+
int32_t
init (xlator_t *this)
{
@@ -1629,6 +1728,7 @@ struct xlator_fops fops = {
.fsetxattr = qr_fsetxattr,
.fgetxattr = qr_fgetxattr,
.flush = qr_flush,
+ .fentrylk = qr_fentrylk,
};