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authorLiu Song <liu.song11@zte.com.cn>2019-08-06 14:21:40 (GMT)
committerRichard Weinberger <richard@nod.at>2019-08-22 15:25:33 (GMT)
commit0af83abbd4a6e36a4b209d8c57c26143e40eeec1 (patch)
tree34e3a15202d2043e0990602a1f3c79c980468696
parent377e208f44784174f3002d9892d553715a3ab71b (diff)
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ubifs: Limit the number of pages in shrink_liability
If the number of dirty pages to be written back is large, then writeback_inodes_sb will block waiting for a long time, causing hung task detection alarm. Therefore, we should limit the maximum number of pages written back this time, which let the budget be completed faster. The remaining dirty pages tend to rely on the writeback mechanism to complete the synchronization. Fixes: b6e51316daed ("writeback: separate starting of sync vs opportunistic writeback") Signed-off-by: Liu Song <liu.song11@zte.com.cn> Signed-off-by: Richard Weinberger <richard@nod.at>
-rw-r--r--fs/ubifs/budget.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index 80d7301..c0b84e9 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -51,7 +51,7 @@
static void shrink_liability(struct ubifs_info *c, int nr_to_write)
{
down_read(&c->vfs_sb->s_umount);
- writeback_inodes_sb(c->vfs_sb, WB_REASON_FS_FREE_SPACE);
+ writeback_inodes_sb_nr(c->vfs_sb, nr_to_write, WB_REASON_FS_FREE_SPACE);
up_read(&c->vfs_sb->s_umount);
}