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Btrfs: add missing end_page_writeback on submit_extent_page failure 

If submit_extent_page() fails in write_one_eb(), we end up with the current
page not marked dirty anymore, unlocked and marked for writeback. But we never
end up calling end_page_writeback() against the page, which will make calls to
filemap_fdatawait_range (e.g. at transaction commit time) hang forever waiting
for the writeback bit to be cleared from the page.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Filipe Manana 2014-09-22 17:41:04 +01:00 committed by Chris Mason
parent 32be3a1ac6
commit 55e3bd2e0c
1 changed files with 1 additions and 0 deletions
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1
fs/btrfs/extent_io.c
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@ -3663,6 +3663,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
if (ret) { if (ret) {
set_bit(EXTENT_BUFFER_IOERR, &eb->bflags); set_bit(EXTENT_BUFFER_IOERR, &eb->bflags);
SetPageError(p); SetPageError(p);
end_page_writeback(p);
if (atomic_sub_and_test(num_pages - i, &eb->io_pages)) if (atomic_sub_and_test(num_pages - i, &eb->io_pages))
end_extent_buffer_writeback(eb); end_extent_buffer_writeback(eb);
ret = -EIO; ret = -EIO;