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authorTheodore Ts'o <tytso@mit.edu>2013-04-20 15:46:17 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-04-20 15:46:17 -0400
commit9f203507ed277ee86e3f76a15e09db1c92e40b94 (patch)
tree3055dbd2f6a885b20db3fda1d56ea0d9e780d9dd /fs/ext4/balloc.c
parentc4d8b0235aa98f8c26bf94d308be3fdd24154572 (diff)
downloadop-kernel-dev-9f203507ed277ee86e3f76a15e09db1c92e40b94.zip
op-kernel-dev-9f203507ed277ee86e3f76a15e09db1c92e40b94.tar.gz
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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 8dcaea6..d0f13ea 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);
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