diff options
Diffstat (limited to 'xlators/storage/posix/src/posix-aio.c')
| -rw-r--r-- | xlators/storage/posix/src/posix-aio.c | 66 |
1 files changed, 60 insertions, 6 deletions
diff --git a/xlators/storage/posix/src/posix-aio.c b/xlators/storage/posix/src/posix-aio.c index ac0ce870506..075fd320e7e 100644 --- a/xlators/storage/posix/src/posix-aio.c +++ b/xlators/storage/posix/src/posix-aio.c @@ -31,6 +31,47 @@ #include <libaio.h> +void +__posix_fd_set_odirect (fd_t *fd, struct posix_fd *pfd, int opflags, + off_t offset, size_t size) +{ + int odirect = 0; + int flags = 0; + int ret = 0; + + odirect = pfd->odirect; + + if ((fd->flags|opflags) & O_DIRECT) { + /* if instructed, use O_DIRECT always */ + odirect = 1; + } else { + /* else use O_DIRECT when feasible */ + if ((offset|size) & 0xfff) + odirect = 0; + else + odirect = 1; + } + + if (!odirect && pfd->odirect) { + flags = fcntl (pfd->fd, F_GETFL); + ret = fcntl (pfd->fd, F_SETFL, (flags & (~O_DIRECT))); + pfd->odirect = 0; + } + + if (odirect && !pfd->odirect) { + flags = fcntl (pfd->fd, F_GETFL); + ret = fcntl (pfd->fd, F_SETFL, (flags | O_DIRECT)); + pfd->odirect = 1; + } + + if (ret) { + gf_log (THIS->name, GF_LOG_WARNING, + "fcntl() failed (%s). fd=%d flags=%d pfd->odirect=%d", + strerror (errno), pfd->fd, flags, pfd->odirect); + } +} + + struct posix_aio_cb { struct iocb iocb; call_frame_t *frame; @@ -49,7 +90,6 @@ posix_aio_readv_complete (struct posix_aio_cb *paiocb, int res, int res2) call_frame_t *frame = NULL; xlator_t *this = NULL; struct iobuf *iobuf = NULL; - struct iatt prebuf = {0,}; struct iatt postbuf = {0,}; int _fd = -1; int op_ret = -1; @@ -65,7 +105,6 @@ posix_aio_readv_complete (struct posix_aio_cb *paiocb, int res, int res2) this = frame->this; priv = this->private; iobuf = paiocb->iobuf; - prebuf = paiocb->prebuf; _fd = paiocb->fd; offset = paiocb->offset; @@ -154,7 +193,7 @@ posix_aio_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, priv = this->private; - ret = posix_fd_ctx_get_off (fd, this, &pfd, offset); + ret = posix_fd_ctx_get (fd, this, &pfd); if (ret < 0) { op_errno = -ret; gf_log (this->name, GF_LOG_WARNING, @@ -198,7 +237,14 @@ posix_aio_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, iocb = &paiocb->iocb; - ret = io_submit (priv->ctxp, 1, &iocb); + LOCK (&fd->lock); + { + __posix_fd_set_odirect (fd, pfd, flags, offset, size); + + ret = io_submit (priv->ctxp, 1, &iocb); + } + UNLOCK (&fd->lock); + if (ret != 1) { gf_log (this->name, GF_LOG_ERROR, "io_submit() returned %d", ret); @@ -304,7 +350,7 @@ posix_aio_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, priv = this->private; - ret = posix_fd_ctx_get_off (fd, this, &pfd, offset); + ret = posix_fd_ctx_get (fd, this, &pfd); if (ret < 0) { op_errno = -ret; gf_log (this->name, GF_LOG_WARNING, @@ -346,7 +392,15 @@ posix_aio_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, } - ret = io_submit (priv->ctxp, 1, &iocb); + LOCK (&fd->lock); + { + __posix_fd_set_odirect (fd, pfd, flags, offset, + iov_length (iov, count)); + + ret = io_submit (priv->ctxp, 1, &iocb); + } + UNLOCK (&fd->lock); + if (ret != 1) { gf_log (this->name, GF_LOG_ERROR, "io_submit() returned %d", ret); |