Messages in this thread Patch in this message | | | From | Tejun Heo <> | Subject | [PATCH 9/9] Btrfs: extent_write_locked_range() should attach inode->i_wb | Date | Sat, 15 Jun 2019 11:24:53 -0700 |
| |
From: Chris Mason <clm@fb.com>
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.
Signed-off-by: Chris Mason <clm@fb.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> --- 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 d7b57341ff1a..afb916a69c30 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4180,6 +4180,7 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, .no_wbc_acct = 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)) @@ -4194,11 +4195,12 @@ 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; } -- 2.17.1
| |