diff options
| author | Jeffle Xu <jefflexu@linux.alibaba.com> | 2022-02-09 14:00:52 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-03-16 09:34:40 +0800 |
| commit | ed6e0401e68bdfe08de9b44968fb235ff10ccee1 (patch) | |
| tree | bab44c4910491cb84b6b6ecbee8d6c1f1d9f4346 /fs/erofs/super.c | |
| parent | ffb217a13a2eaf6d5bd974fc83036a53ca69f1e2 (diff) | |
| download | linux-ed6e0401e68bdfe08de9b44968fb235ff10ccee1.tar.bz2 | |
erofs: use meta buffers for erofs_read_superblock()
The only change is that, meta buffers read cache page without __GFP_FS
flag, which shall not matter.
Link: https://lore.kernel.org/r/20220209060108.43051-7-jefflexu@linux.alibaba.com
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/super.c')
| -rw-r--r-- | fs/erofs/super.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 915eefe0d7e2..12755217631f 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -281,21 +281,19 @@ static int erofs_init_devices(struct super_block *sb, static int erofs_read_superblock(struct super_block *sb) { struct erofs_sb_info *sbi; - struct page *page; + struct erofs_buf buf = __EROFS_BUF_INITIALIZER; struct erofs_super_block *dsb; unsigned int blkszbits; void *data; int ret; - page = read_mapping_page(sb->s_bdev->bd_inode->i_mapping, 0, NULL); - if (IS_ERR(page)) { + data = erofs_read_metabuf(&buf, sb, 0, EROFS_KMAP); + if (IS_ERR(data)) { erofs_err(sb, "cannot read erofs superblock"); - return PTR_ERR(page); + return PTR_ERR(data); } sbi = EROFS_SB(sb); - - data = kmap(page); dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET); ret = -EINVAL; @@ -365,8 +363,7 @@ static int erofs_read_superblock(struct super_block *sb) if (erofs_sb_has_ztailpacking(sbi)) erofs_info(sb, "EXPERIMENTAL compressed inline data feature in use. Use at your own risk!"); out: - kunmap(page); - put_page(page); + erofs_put_metabuf(&buf); return ret; } |