diff options
| author | Raghavendra G <raghavendra@gluster.com> | 2010-04-05 05:59:17 +0000 |
|---|---|---|
| committer | Anand V. Avati <avati@dev.gluster.com> | 2010-04-08 03:08:31 -0700 |
| commit | 0143139ba85211e8b96ec238c97d0885ae0817b1 (patch) | |
| tree | 281067bba6fe851e123d9eb09d117a8d8690d23f /xlators/performance | |
| parent | c724beb161ce5f21862e9bb425736efed7532777 (diff) | |
performance/quick-read: read directly from backend for fds opened with O_DIRECT flag.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
Diffstat (limited to 'xlators/performance')
| -rw-r--r-- | xlators/performance/quick-read/src/quick-read.c | 13 | ||||
| -rw-r--r-- | xlators/performance/quick-read/src/quick-read.h | 1 |
2 files changed, 12 insertions, 2 deletions
diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c index 41fa8b070d8..6cdb735a049 100644 --- a/xlators/performance/quick-read/src/quick-read.c +++ b/xlators/performance/quick-read/src/quick-read.c @@ -486,8 +486,9 @@ qr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, goto unwind; } - if (!content_cached || ((flags & O_WRONLY) == O_WRONLY) - || ((flags & O_TRUNC) == O_TRUNC)) { + if (!content_cached || ((flags & O_ACCMODE) == O_WRONLY) + || ((flags & O_TRUNC) == O_TRUNC) + || ((flags & O_DIRECT) == O_DIRECT)) { LOCK (&qr_fd_ctx->lock); { /* @@ -496,6 +497,9 @@ qr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, */ qr_fd_ctx->open_in_transit = 1; + if ((flags & O_DIRECT) == O_DIRECT) { + qr_fd_ctx->disabled = 1; + } } UNLOCK (&qr_fd_ctx->lock); goto wind; @@ -781,6 +785,11 @@ qr_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, ret = fd_ctx_get (fd, this, &value); if (ret == 0) { qr_fd_ctx = (qr_fd_ctx_t *)(long) value; + if (qr_fd_ctx != NULL) { + if (qr_fd_ctx->disabled) { + goto out; + } + } } iobuf_pool = this->ctx->iobuf_pool; diff --git a/xlators/performance/quick-read/src/quick-read.h b/xlators/performance/quick-read/src/quick-read.h index e5bca63767e..e6aebecc18d 100644 --- a/xlators/performance/quick-read/src/quick-read.h +++ b/xlators/performance/quick-read/src/quick-read.h @@ -45,6 +45,7 @@ struct qr_fd_ctx { char opened; + char disabled; char open_in_transit; char *path; int flags; |