lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 31 Aug 2022 15:21:01 +0800 From: Zhang Yi <yi.zhang@...wei.com> To: <linux-ext4@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <cluster-devel@...hat.com>, <ntfs3@...ts.linux.dev>, <ocfs2-devel@....oracle.com>, <reiserfs-devel@...r.kernel.org> CC: <jack@...e.cz>, <tytso@....edu>, <akpm@...ux-foundation.org>, <axboe@...nel.dk>, <viro@...iv.linux.org.uk>, <rpeterso@...hat.com>, <agruenba@...hat.com>, <almaz.alexandrovich@...agon-software.com>, <mark@...heh.com>, <dushistov@...l.ru>, <hch@...radead.org>, <yi.zhang@...wei.com>, <chengzhihao1@...wei.com>, <yukuai3@...wei.com> Subject: [PATCH 04/14] 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. Signed-off-by: Zhang Yi <yi.zhang@...wei.com> --- fs/gfs2/meta_io.c | 6 ++---- fs/gfs2/quota.c | 4 +--- 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 7e70e0ba5a6c..07e882aa7ebd 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--; @@ -535,8 +534,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 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..0c2ef4226aba 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -746,9 +746,7 @@ 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)) + if (bh_read(bh, REQ_META | REQ_PRIO)) goto unlock_out; } if (gfs2_is_jdata(ip)) -- 2.31.1
Powered by blists - more mailing lists