From: Liu Song Date: Tue, 6 Aug 2019 14:21:40 +0000 (+0800) Subject: ubifs: Limit the number of pages in shrink_liability X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0af83abbd4a6e36a4b209d8c57c26143e40eeec1;p=linux.git 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 Signed-off-by: Richard Weinberger --- diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c index 80d7301ab76d0..c0b84e960b20c 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); }