diff options
| author |   Zhang Yi <yi.zhang@huawei.com> | 2022-09-01 21:34:58 +0800 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2022-09-11 20:26:07 -0700 |
| commit | 6bf414a00ae7688fac1e03f63431a355068a1d79 (patch) | |
| tree | dfcf9e050f989affa66f55038adf1255f58ce5da | |
| parent | jbd2: replace ll_rw_block() (diff) | |
| download | linux-dev-6bf414a00ae7688fac1e03f63431a355068a1d79.tar.xz linux-dev-6bf414a00ae7688fac1e03f63431a355068a1d79.zip | |
ntfs3: replace ll_rw_block()
ll_rw_block() is not safe for the sync read path because it cannot
guarantee that submitting read IO if the buffer has been locked. We
could get false positive EIO after wait_on_buffer() if the buffer has
been locked by others. So stop using ll_rw_block() in
ntfs_get_block_vbo().
Link: https://lkml.kernel.org/r/20220901133505.2510834-8-yi.zhang@huawei.com
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | fs/ntfs3/inode.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 51363d4e8636..cadbfa111539 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -630,12 +630,9 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo, bh->b_size = block_size; off = vbo & (PAGE_SIZE - 1); set_bh_page(bh, page, off); - ll_rw_block(REQ_OP_READ, 1, &bh); - wait_on_buffer(bh); - if (!buffer_uptodate(bh)) { - err = -EIO; + err = bh_read(bh, 0); + if (err < 0) goto out; - } zero_user_segment(page, off + voff, off + block_size); } } |