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authorZhang Yi <yi.zhang@huawei.com>2022-09-01 16:34:55 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-09-12 06:26:06 +0300
commit86a020cc7232c3defad370852415876bbe4576dc (patch)
treed238e7d036299c97752b6cd03e32ca3918ddd1b8
parente7ea1129afab0e63af2c2d0e6e9fb7651f0982b3 (diff)
downloadlinux-86a020cc7232c3defad370852415876bbe4576dc.tar.xz
gfs2: replace ll_rw_block()
ll_rw_block() is not safe for the sync read path because it cannot guarantee that always submitting read IO if the buffer has been locked, so stop using it. We also switch to new bh_readahead() helper for the readahead path. Link: https://lkml.kernel.org/r/20220901133505.2510834-5-yi.zhang@huawei.com Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r--fs/gfs2/meta_io.c7
-rw-r--r--fs/gfs2/quota.c8
2 files changed, 4 insertions, 11 deletions
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 7e70e0ba5a6c..6ed728aae9a5 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -525,8 +525,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
if (buffer_uptodate(first_bh))
goto out;
- if (!buffer_locked(first_bh))
- ll_rw_block(REQ_OP_READ | REQ_META | REQ_PRIO, 1, &first_bh);
+ bh_read_nowait(first_bh, REQ_META | REQ_PRIO);
dblock++;
extlen--;
@@ -534,9 +533,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
while (extlen) {
bh = gfs2_getbuf(gl, dblock, CREATE);
- if (!buffer_uptodate(bh) && !buffer_locked(bh))
- ll_rw_block(REQ_OP_READ | REQ_RAHEAD | REQ_META |
- REQ_PRIO, 1, &bh);
+ bh_readahead(bh, REQ_RAHEAD | REQ_META | REQ_PRIO);
brelse(bh);
dblock++;
extlen--;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index f201eaf59d0d..1ed17226d9ed 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -745,12 +745,8 @@ static int gfs2_write_buf_to_page(struct gfs2_inode *ip, unsigned long index,
}
if (PageUptodate(page))
set_buffer_uptodate(bh);
- if (!buffer_uptodate(bh)) {
- ll_rw_block(REQ_OP_READ | REQ_META | REQ_PRIO, 1, &bh);
- wait_on_buffer(bh);
- if (!buffer_uptodate(bh))
- goto unlock_out;
- }
+ if (bh_read(bh, REQ_META | REQ_PRIO) < 0)
+ goto unlock_out;
if (gfs2_is_jdata(ip))
gfs2_trans_add_data(ip->i_gl, bh);
else