From dbb70becde5b28940366ee419e0fdd3e09af44fb Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Wed, 10 Jul 2019 12:28:18 -0700 Subject: [PATCH] Btrfs: extent_write_locked_range() should attach inode->i_wb extent_write_locked_range() is used when we're falling back to buffered IO from inside of compression. It allocates its own wbc and should associate it with the inode's i_wb to make sure the IO goes down from the correct cgroup. Reviewed-by: Josef Bacik Signed-off-by: Chris Mason Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 16b5d8e02e77..e88625beb2c0 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4255,6 +4255,7 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, .no_cgroup_owner = 1, }; + wbc_attach_fdatawrite_inode(&wbc_writepages, inode); while (start <= end) { page = find_get_page(mapping, start >> PAGE_SHIFT); if (clear_page_dirty_for_io(page)) @@ -4269,11 +4270,12 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, } ASSERT(ret <= 0); - if (ret < 0) { + if (ret == 0) + ret = flush_write_bio(&epd); + else end_write_bio(&epd, ret); - return ret; - } - ret = flush_write_bio(&epd); + + wbc_detach_inode(&wbc_writepages); return ret; } -- 2.25.1