From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Simmons Date: Thu, 27 Feb 2020 16:14:55 -0500 Subject: [lustre-devel] [PATCH 427/622] lustre: osc: reserve lru pages for read in batch In-Reply-To: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> References: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> Message-ID: <1582838290-17243-428-git-send-email-jsimmons@infradead.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org From: Wang Shilong The benefit of doing this is to reduce contention against atomic counter cl_lru_left by changing it from per-page access to per-IO access. We have done this optimization for write, do it for read too. WC-bug-id: https://jira.whamcloud.com/browse/LU-12520 Lustre-commit: 0692dadfba87 ("LU-12520 osc: reserve lru pages for read in batch") Signed-off-by: Wang Shilong Reviewed-on: https://review.whamcloud.com/35440 Reviewed-by: Patrick Farrell Reviewed-by: Li Dongyang Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- fs/lustre/include/lustre_osc.h | 6 +++--- fs/lustre/mdc/mdc_dev.c | 8 ++++---- fs/lustre/osc/osc_io.c | 20 ++++++++++---------- 3 files changed, 17 insertions(+), 17 deletions(-) diff --git a/fs/lustre/include/lustre_osc.h b/fs/lustre/include/lustre_osc.h index 1c5af80..37e56ef 100644 --- a/fs/lustre/include/lustre_osc.h +++ b/fs/lustre/include/lustre_osc.h @@ -685,9 +685,9 @@ int osc_io_commit_async(const struct lu_env *env, int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios); void osc_io_iter_fini(const struct lu_env *env, const struct cl_io_slice *ios); -int osc_io_write_iter_init(const struct lu_env *env, - const struct cl_io_slice *ios); -void osc_io_write_iter_fini(const struct lu_env *env, +int osc_io_rw_iter_init(const struct lu_env *env, + const struct cl_io_slice *ios); +void osc_io_rw_iter_fini(const struct lu_env *env, const struct cl_io_slice *ios); int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios); void osc_io_setattr_end(const struct lu_env *env, diff --git a/fs/lustre/mdc/mdc_dev.c b/fs/lustre/mdc/mdc_dev.c index df8bb33..b49509c 100644 --- a/fs/lustre/mdc/mdc_dev.c +++ b/fs/lustre/mdc/mdc_dev.c @@ -1257,13 +1257,13 @@ static void mdc_io_data_version_end(const struct lu_env *env, static struct cl_io_operations mdc_io_ops = { .op = { [CIT_READ] = { - .cio_iter_init = osc_io_iter_init, - .cio_iter_fini = osc_io_iter_fini, + .cio_iter_init = osc_io_rw_iter_init, + .cio_iter_fini = osc_io_rw_iter_fini, .cio_start = osc_io_read_start, }, [CIT_WRITE] = { - .cio_iter_init = osc_io_write_iter_init, - .cio_iter_fini = osc_io_write_iter_fini, + .cio_iter_init = osc_io_rw_iter_init, + .cio_iter_fini = osc_io_rw_iter_fini, .cio_start = osc_io_write_start, .cio_end = osc_io_end, }, diff --git a/fs/lustre/osc/osc_io.c b/fs/lustre/osc/osc_io.c index dfdf064..4f46b95 100644 --- a/fs/lustre/osc/osc_io.c +++ b/fs/lustre/osc/osc_io.c @@ -375,8 +375,8 @@ int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios) } EXPORT_SYMBOL(osc_io_iter_init); -int osc_io_write_iter_init(const struct lu_env *env, - const struct cl_io_slice *ios) +int osc_io_rw_iter_init(const struct lu_env *env, + const struct cl_io_slice *ios) { struct cl_io *io = ios->cis_io; struct osc_io *oio = osc_env_io(env); @@ -394,7 +394,7 @@ int osc_io_write_iter_init(const struct lu_env *env, return osc_io_iter_init(env, ios); } -EXPORT_SYMBOL(osc_io_write_iter_init); +EXPORT_SYMBOL(osc_io_rw_iter_init); void osc_io_iter_fini(const struct lu_env *env, const struct cl_io_slice *ios) @@ -412,8 +412,8 @@ void osc_io_iter_fini(const struct lu_env *env, } EXPORT_SYMBOL(osc_io_iter_fini); -void osc_io_write_iter_fini(const struct lu_env *env, - const struct cl_io_slice *ios) +void osc_io_rw_iter_fini(const struct lu_env *env, + const struct cl_io_slice *ios) { struct osc_io *oio = osc_env_io(env); struct osc_object *osc = cl2osc(ios->cis_obj); @@ -426,7 +426,7 @@ void osc_io_write_iter_fini(const struct lu_env *env, osc_io_iter_fini(env, ios); } -EXPORT_SYMBOL(osc_io_write_iter_fini); +EXPORT_SYMBOL(osc_io_rw_iter_fini); int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios) { @@ -970,14 +970,14 @@ void osc_io_end(const struct lu_env *env, const struct cl_io_slice *slice) static const struct cl_io_operations osc_io_ops = { .op = { [CIT_READ] = { - .cio_iter_init = osc_io_iter_init, - .cio_iter_fini = osc_io_iter_fini, + .cio_iter_init = osc_io_rw_iter_init, + .cio_iter_fini = osc_io_rw_iter_fini, .cio_start = osc_io_read_start, .cio_fini = osc_io_fini }, [CIT_WRITE] = { - .cio_iter_init = osc_io_write_iter_init, - .cio_iter_fini = osc_io_write_iter_fini, + .cio_iter_init = osc_io_rw_iter_init, + .cio_iter_fini = osc_io_rw_iter_fini, .cio_start = osc_io_write_start, .cio_end = osc_io_end, .cio_fini = osc_io_fini -- 1.8.3.1