xiaomi-sm8450/android_kernel_xiaomi_sm8450
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xfs: only reclaim unwritten COW extents periodically

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We only want to reclaim preallocations from our periodic work item.
Currently this is archived by looking for a dirty inode, but that check
is rather fragile.  Instead add a flag to xfs_reflink_cancel_cow_* so
that the caller can ask for just cancelling unwritten extents in the COW
fork.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: fix typos in commit message]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig
2017-03-07 16:45:58 -08:00
committed by Darrick J. Wong
parent c771c14baa
commit 3802a34532
6 changed files with 22 additions and 13 deletions
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fs/xfs/xfs_inode.c
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@@ -1615,7 +1615,7 @@ xfs_itruncate_extents(
/* Remove all pending CoW reservations. */
error = xfs_reflink_cancel_cow_blocks(ip, &tp, first_unmap_block,
last_block);
last_block, true);
if (error)
goto out;