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authorRaghavendra G <raghavendra@gluster.com>2011-07-15 01:54:31 +0000
committerAnand Avati <avati@gluster.com>2011-07-29 01:30:28 -0700
commitbe817019cbb096fe2cca632c6fbcf77f360e201d (patch)
tree4e9b071ebb12fb4049ae6fbff68c3654af48eb82 /xlators
parent426c6e6b24748c0826cc97e8f736bc87a1c8df04 (diff)
performance/quick-read: Handle unwinding of frame corresponding to read fop properly, while validating cache.
- there was a possibility of double unwind in case of errors. - use a new frame to do open in fd-based fops. In case of errors, qr_resume_pending_ops will be called to resume all the fops waiting on open. Hence if we use frame corresponding to fop (without creating a new one), there is a possibility of frame being freed by the time open would've returned to quick-read. Change-Id: Ie4cc19907f9d6362860bdb984779c8f4cf822332 BUG: 3168 Signed-off-by: Raghavendra G <raghavendra@gluster.com> Reviewed-on: http://review.gluster.com/35 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
Diffstat (limited to 'xlators')
-rw-r--r--xlators/performance/quick-read/src/quick-read.c335
1 files changed, 220 insertions, 115 deletions
diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c
index 75a799d..9ff5f2a 100644
--- a/xlators/performance/quick-read/src/quick-read.c
+++ b/xlators/performance/quick-read/src/quick-read.c
@@ -572,8 +572,6 @@ qr_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
local = frame->local;
if (local != NULL) {
- local->op_ret = op_ret;
- local->op_errno = op_errno;
is_open = local->is_open;
}
@@ -642,6 +640,8 @@ qr_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
out:
if (is_open) {
QR_STACK_UNWIND (open, frame, op_ret, op_errno, fd);
+ } else {
+ STACK_DESTROY (frame->root);
}
return 0;
@@ -879,6 +879,10 @@ qr_validate_cache_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
unwind:
/* this is actually unwind of readv */
+ if ((local != NULL) && (local->stub != NULL)) {
+ call_stub_destroy (local->stub);
+ }
+
QR_STACK_UNWIND (readv, frame, op_ret, op_errno, NULL, -1, NULL, NULL);
return 0;
}
@@ -919,15 +923,16 @@ int
qr_validate_cache (call_frame_t *frame, xlator_t *this, fd_t *fd,
call_stub_t *stub)
{
- int ret = -1;
- int flags = 0;
- uint64_t value = 0;
- loc_t loc = {0, };
- char *path = NULL;
- qr_local_t *local = NULL;
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- call_stub_t *validate_stub = NULL;
- char need_open = 0, can_wind = 0;
+ int ret = -1;
+ int flags = 0;
+ uint64_t value = 0;
+ loc_t loc = {0, };
+ char *path = NULL;
+ qr_local_t *local = NULL;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ call_stub_t *validate_stub = NULL;
+ char need_open = 0, can_wind = 0, validate_cbk_called = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
GF_VALIDATE_OR_GOTO (frame->this->name, this, out);
@@ -972,7 +977,9 @@ qr_validate_cache (call_frame_t *frame, xlator_t *this, fd_t *fd,
fd);
if (validate_stub == NULL) {
ret = -1;
- qr_fd_ctx->open_in_transit = 0;
+ if (need_open) {
+ qr_fd_ctx->open_in_transit = 0;
+ }
goto unlock;
}
@@ -991,13 +998,22 @@ qr_validate_cache (call_frame_t *frame, xlator_t *this, fd_t *fd,
}
if (need_open) {
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ validate_cbk_called = 1;
+ goto out;
+ }
+
ret = qr_loc_fill (&loc, fd->inode, path);
if (ret == -1) {
qr_resume_pending_ops (qr_fd_ctx, -1, errno);
+ validate_cbk_called = 1;
+ STACK_DESTROY (open_frame->root);
goto out;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open,
&loc, flags, fd, qr_fd_ctx->wbflags);
@@ -1009,6 +1025,13 @@ qr_validate_cache (call_frame_t *frame, xlator_t *this, fd_t *fd,
ret = 0;
out:
+ if ((ret < 0) && !validate_cbk_called) {
+ if (frame->local == NULL) {
+ call_stub_destroy (stub);
+ }
+
+ qr_validate_cache_cbk (frame, NULL, this, -1, errno, NULL);
+ }
return ret;
}
@@ -1093,6 +1116,7 @@ qr_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
char just_validated = 0;
qr_private_t *priv = NULL;
qr_inode_table_t *table = NULL;
+ call_frame_t *open_frame = NULL;
op_ret = 0;
@@ -1239,13 +1263,7 @@ out:
goto out;
}
- op_ret = qr_validate_cache (frame, this, fd, stub);
- if (op_ret == -1) {
- need_unwind = 1;
- op_errno = errno;
- call_stub_destroy (stub);
- goto out;
- }
+ qr_validate_cache (frame, this, fd, stub);
} else {
if (qr_fd_ctx) {
LOCK (&qr_fd_ctx->lock);
@@ -1309,7 +1327,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open,
&loc, flags, fd, qr_fd_ctx->wbflags);
@@ -1393,17 +1418,18 @@ int32_t
qr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
int32_t count, off_t off, struct iobref *iobref)
{
- uint64_t value = 0;
- int flags = 0;
- call_stub_t *stub = NULL;
- char *path = NULL;
- loc_t loc = {0, };
- qr_inode_t *qr_inode = NULL;
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- int32_t op_ret = -1, op_errno = -1, ret = -1;
- char can_wind = 0, need_unwind = 0, need_open = 0;
- qr_private_t *priv = NULL;
- qr_inode_table_t *table = NULL;
+ uint64_t value = 0;
+ int flags = 0;
+ call_stub_t *stub = NULL;
+ char *path = NULL;
+ loc_t loc = {0, };
+ qr_inode_t *qr_inode = NULL;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ int32_t op_ret = -1, op_errno = -1, ret = -1;
+ char can_wind = 0, need_unwind = 0, need_open = 0;
+ qr_private_t *priv = NULL;
+ qr_inode_table_t *table = NULL;
+ call_frame_t *open_frame = NULL;
priv = this->private;
table = &priv->table;
@@ -1487,7 +1513,14 @@ qr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -1551,14 +1584,15 @@ unwind:
int32_t
qr_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd)
{
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
- uint64_t value = 0;
- int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
- call_stub_t *stub = NULL;
- loc_t loc = {0, };
- char *path = NULL;
- int flags = 0;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ uint64_t value = 0;
+ int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
+ call_stub_t *stub = NULL;
+ loc_t loc = {0, };
+ char *path = NULL;
+ int flags = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
if ((this == NULL) || (fd == NULL)) {
@@ -1633,7 +1667,14 @@ unwind:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -1703,14 +1744,15 @@ int32_t
qr_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
struct iatt *stbuf, int32_t valid)
{
- uint64_t value = 0;
- int flags = 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 = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ uint64_t value = 0;
+ int flags = 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 = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
if ((this == NULL) || (fd == NULL)) {
@@ -1786,7 +1828,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -1854,14 +1903,15 @@ int32_t
qr_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
int32_t flags)
{
- uint64_t value = 0;
- call_stub_t *stub = NULL;
- char *path = NULL;
- loc_t loc = {0, };
- int open_flags = 0;
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ uint64_t value = 0;
+ call_stub_t *stub = NULL;
+ char *path = NULL;
+ loc_t loc = {0, };
+ int open_flags = 0;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
if ((this == NULL) || (fd == NULL)) {
@@ -1938,7 +1988,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, open_flags,
fd, qr_fd_ctx->wbflags);
@@ -2005,14 +2062,15 @@ unwind:
int32_t
qr_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, const char *name)
{
- 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 = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ 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 = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
/*
* FIXME: Can quick-read use the extended attributes stored in the
@@ -2093,7 +2151,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -2288,14 +2353,15 @@ 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 = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ 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 = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
if ((this == NULL) || (fd == NULL)) {
gf_log (frame->this->name, GF_LOG_WARNING,
@@ -2372,7 +2438,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -2441,14 +2514,15 @@ int32_t
qr_finodelk (call_frame_t *frame, xlator_t *this, const char *volume, fd_t *fd,
int32_t cmd, struct gf_flock *lock)
{
- 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 = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ 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 = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
if ((this == NULL) || (fd == NULL)) {
gf_log (frame->this->name, GF_LOG_WARNING,
@@ -2525,7 +2599,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -2590,14 +2671,15 @@ unwind:
int32_t
qr_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags)
{
- uint64_t value = 0;
- call_stub_t *stub = NULL;
- char *path = NULL;
- loc_t loc = {0, };
- int open_flags = 0;
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ uint64_t value = 0;
+ call_stub_t *stub = NULL;
+ char *path = NULL;
+ loc_t loc = {0, };
+ int open_flags = 0;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
if ((this == NULL) || (fd == NULL)) {
gf_log (frame->this->name, GF_LOG_WARNING,
@@ -2671,7 +2753,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, open_flags,
fd, qr_fd_ctx->wbflags);
@@ -2793,15 +2882,16 @@ unwind:
int32_t
qr_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset)
{
- int flags = 0;
- uint64_t value = 0;
- call_stub_t *stub = NULL;
- char *path = NULL;
- loc_t loc = {0, };
- qr_local_t *local = NULL;
- qr_fd_ctx_t *qr_fd_ctx = NULL;
- int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ int flags = 0;
+ uint64_t value = 0;
+ call_stub_t *stub = NULL;
+ char *path = NULL;
+ loc_t loc = {0, };
+ qr_local_t *local = NULL;
+ qr_fd_ctx_t *qr_fd_ctx = NULL;
+ int32_t ret = -1, op_ret = -1, op_errno = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
if ((this == NULL) || (fd == NULL)) {
@@ -2878,7 +2968,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);
@@ -2946,14 +3043,15 @@ int32_t
qr_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd,
struct gf_flock *lock)
{
- 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 = EINVAL;
- char need_open = 0, can_wind = 0, need_unwind = 0;
+ 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 = EINVAL;
+ char need_open = 0, can_wind = 0, need_unwind = 0;
+ call_frame_t *open_frame = NULL;
GF_ASSERT (frame);
if ((this == NULL) || (fd == NULL)) {
@@ -3028,7 +3126,14 @@ out:
goto ret;
}
- STACK_WIND (frame, qr_open_cbk, FIRST_CHILD(this),
+ open_frame = create_frame (this, this->ctx->pool);
+ if (open_frame == NULL) {
+ qr_resume_pending_ops (qr_fd_ctx, -1, ENOMEM);
+ qr_loc_wipe (&loc);
+ goto ret;
+ }
+
+ STACK_WIND (open_frame, qr_open_cbk, FIRST_CHILD(this),
FIRST_CHILD(this)->fops->open, &loc, flags, fd,
qr_fd_ctx->wbflags);