Viewing: ext4-dquot-commit-speedup.patch
commit dad25f258e50895b4bd5fce30765599a7a490aa0
Author: Andrew Perepechko <andrew.perepechko@hpe.com>
AuthorDate: Wed Jul 11 16:32:33 2018 +0300
LU-12353 ldiskfs: speedup quota journalling
ldiskfs_mark_dquot_dirty() need not call
ldiskfs_write_dquot() if the dquot is already
dirty since we are guaranteed that another
thread is already writing the dquot and
will update the buffer with the latest
dquot data.
Signed-off-by: Andrew Perepechko <c17827@cray.com>
Cray-bug-id: LUS-5342
Reviewed-by: Wang Shilong <wshilong@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Ia65c5987bbb0d6d2ac94c5499cb8b51edc3c49c3
Reviewed-on: https://review.whamcloud.com/34992
---
fs/ext4/super.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 59d219a..4af616e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -6409,6 +6409,8 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot)
/* Are we journaling quotas? */
if (ext4_has_feature_quota(sb) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+ if (test_bit(DQ_MOD_B, &dquot->dq_flags))
+ return 0;
dquot_mark_dquot_dirty(dquot);
return ext4_write_dquot(dquot);
} else {
--
2.33.0
