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| author | Christoph Hellwig <hch@infradead.org> | 2010-08-18 05:29:13 -0400 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-09-10 12:35:39 +0200 |
| commit | f1e4d518c3beddf67f7722f3548eda0ec7006204 (patch) | |
| tree | eafc3939ae2941ce8c543383a2e7cf569076e362 | |
| parent | c3b9a62c8f932f32a733d6b628f61f3f28345727 (diff) | |
| download | op-kernel-dev-f1e4d518c3beddf67f7722f3548eda0ec7006204.zip op-kernel-dev-f1e4d518c3beddf67f7722f3548eda0ec7006204.tar.gz | |
gfs2: replace barriers with explicit flush / FUA usage
Switch to the WRITE_FLUSH_FUA flag for log writes, remove the EOPNOTSUPP
detection for barriers and stop setting the barrier flag for discards.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| -rw-r--r-- | fs/gfs2/log.c | 19 | ||||
| -rw-r--r-- | fs/gfs2/rgrp.c | 5 |
2 files changed, 7 insertions, 17 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index cde1248..9c65170 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -592,22 +592,13 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull) lh->lh_hash = cpu_to_be32(hash); bh->b_end_io = end_buffer_write_sync; - if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) - goto skip_barrier; get_bh(bh); - submit_bh(WRITE_BARRIER | REQ_META, bh); - wait_on_buffer(bh); - if (buffer_eopnotsupp(bh)) { - clear_buffer_eopnotsupp(bh); - set_buffer_uptodate(bh); - fs_info(sdp, "barrier sync failed - disabling barriers\n"); - set_bit(SDF_NOBARRIERS, &sdp->sd_flags); - lock_buffer(bh); -skip_barrier: - get_bh(bh); + if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) submit_bh(WRITE_SYNC | REQ_META, bh); - wait_on_buffer(bh); - } + else + submit_bh(WRITE_FLUSH_FUA | REQ_META, bh); + wait_on_buffer(bh); + if (!buffer_uptodate(bh)) gfs2_io_error_bh(sdp, bh); brelse(bh); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 171a744..3793164 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -854,8 +854,7 @@ static void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, if ((start + nr_sects) != blk) { rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS, - BLKDEV_IFL_WAIT | - BLKDEV_IFL_BARRIER); + BLKDEV_IFL_WAIT); if (rv) goto fail; nr_sects = 0; @@ -870,7 +869,7 @@ start_new_extent: } if (nr_sects) { rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS, - BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER); + BLKDEV_IFL_WAIT); if (rv) goto fail; } |
