diff options
| author | zhangyi (F) <yi.zhang@huawei.com> | 2020-09-24 15:33:35 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-10-18 10:37:14 -0400 |
| commit | 5df1d4123d53261d9d71c7d237d0f165add7ce72 (patch) | |
| tree | b11480e5b0053e2169880b4b4fb5c99eb00b9c79 /fs/ext4/super.c | |
| parent | 60c776e50bc52a9334be8a49415479d5cb6ca2e2 (diff) | |
ext4: introduce ext4_sb_breadahead_unmovable() to replace sb_breadahead_unmovable()
If we readahead inode tables in __ext4_get_inode_loc(), it may bypass
buffer_write_io_error() check, so introduce ext4_sb_breadahead_unmovable()
to handle this special case.
This patch also replace sb_breadahead_unmovable() in ext4_fill_super()
for the sake of unification.
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Link: https://lore.kernel.org/r/20200924073337.861472-6-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 77492cc12807..4a0887e36d45 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -229,6 +229,16 @@ ext4_sb_bread(struct super_block *sb, sector_t block, int op_flags) return bh; } +void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block) +{ + struct buffer_head *bh = sb_getblk_gfp(sb, block, 0); + + if (likely(bh)) { + ext4_read_bh_lock(bh, REQ_RAHEAD, false); + brelse(bh); + } +} + static int ext4_verify_csum_type(struct super_block *sb, struct ext4_super_block *es) { @@ -4556,7 +4566,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) /* Pre-read the descriptors into the buffer cache */ for (i = 0; i < db_count; i++) { block = descriptor_loc(sb, logical_sb_block, i); - sb_breadahead_unmovable(sb, block); + ext4_sb_breadahead_unmovable(sb, block); } for (i = 0; i < db_count; i++) { |