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Btrfs: pass locked_page into extent_clear_unlock_delalloc if theres an error 

While doing my enospc work I got a transaction abortion that resulted in a
panic when we tried to unlock_page() an already unlocked page.  This is
because we aren't calling extent_clear_unlock_delalloc with the locked page
so it was unlocking all the pages in the range.  This is wrong since
__extent_writepage expects to have the page locked still unless we return
*page_started as 1.  This should keep us from panicing.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
This commit is contained in:
Josef Bacik 2012-05-30 15:35:17 -04:00 committed by Chris Mason
parent 1e20932a23
commit beb42dd793
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/inode.c
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@ -830,7 +830,7 @@ static noinline int cow_file_range(struct inode *inode,
if (IS_ERR(trans)) {
extent_clear_unlock_delalloc(inode,
&BTRFS_I(inode)->io_tree,
start, end, NULL,
start, end, locked_page,
EXTENT_CLEAR_UNLOCK_PAGE |
EXTENT_CLEAR_UNLOCK |
EXTENT_CLEAR_DELALLOC |
@ -963,7 +963,7 @@ out:
out_unlock:
extent_clear_unlock_delalloc(inode,
&BTRFS_I(inode)->io_tree,
start, end, NULL,
start, end, locked_page,
EXTENT_CLEAR_UNLOCK_PAGE |
EXTENT_CLEAR_UNLOCK |
EXTENT_CLEAR_DELALLOC |