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authorDarrick J. Wong2016-10-03 09:11:38 -0700
committerDarrick J. Wong2016-10-05 16:26:04 -0700
commitaa8968f227a8c6c7468c9d498daf06f8dbc30af0 (patch)
tree071be2c909a770fa97f3ed97ecb856046e72fa49 /fs
parent0613f16cd20174d701853f1580ad44a9a6791ff2 (diff)
xfs: cancel CoW reservations and clear inode reflink flag when freeing blocks
When we're freeing blocks (truncate, punch, etc.), clear all CoW reservations in the range being freed. If the file block count drops to zero, also clear the inode reflink flag. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_inode.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index edb453d531e1..f072f48b3c04 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -49,6 +49,7 @@
#include "xfs_trans_priv.h"
#include "xfs_log.h"
#include "xfs_bmap_btree.h"
+#include "xfs_reflink.h"
kmem_zone_t *xfs_inode_zone;
@@ -1586,6 +1587,18 @@ xfs_itruncate_extents(
goto out;
}
+ /* Remove all pending CoW reservations. */
+ error = xfs_reflink_cancel_cow_blocks(ip, &tp, first_unmap_block,
+ last_block);
+ if (error)
+ goto out;
+
+ /*
+ * Clear the reflink flag if we truncated everything.
+ */
+ if (ip->i_d.di_nblocks == 0 && xfs_is_reflink_inode(ip))
+ ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+
/*
* Always re-log the inode so that our permanent transaction can keep
* on rolling it forward in the log.