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| author | Theodore Ts'o <tytso@mit.edu> | 2013-04-20 15:46:17 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-04-20 15:46:17 -0400 |
| commit | 9f203507ed277ee86e3f76a15e09db1c92e40b94 (patch) | |
| tree | 3055dbd2f6a885b20db3fda1d56ea0d9e780d9dd /fs/ext4/balloc.c | |
| parent | c4d8b0235aa98f8c26bf94d308be3fdd24154572 (diff) | |
| download | blackbird-op-linux-9f203507ed277ee86e3f76a15e09db1c92e40b94.tar.gz blackbird-op-linux-9f203507ed277ee86e3f76a15e09db1c92e40b94.zip | |
ext4: mark all metadata I/O with REQ_META
As Dave Chinner pointed out at the 2013 LSF/MM workshop, it's
important that metadata I/O requests are marked as such to avoid
priority inversions caused by I/O bandwidth throttling.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/balloc.c')
| -rw-r--r-- | fs/ext4/balloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 8dcaea69e37f..d0f13eada0ed 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -441,7 +441,7 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group) trace_ext4_read_block_bitmap_load(sb, block_group); bh->b_end_io = ext4_end_bitmap_read; get_bh(bh); - submit_bh(READ, bh); + submit_bh(READ | REQ_META | REQ_PRIO, bh); return bh; verify: ext4_validate_block_bitmap(sb, desc, block_group, bh); |
