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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 09:11:23 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 09:11:23 -0700 |
| commit | 62aab20f08758b1b171a73a54e0c72dd12beb980 (patch) | |
| tree | de89fe822091706cb1da1fbb3166a3b976b8d348 /fs | |
| parent | 33ba6129208475ec3aeffe6e9dad9f9afe022405 (diff) | |
| download | blackbird-op-linux-62aab20f08758b1b171a73a54e0c72dd12beb980.tar.gz blackbird-op-linux-62aab20f08758b1b171a73a54e0c72dd12beb980.zip | |
xfs: adjust refcount when unmapping file blocks
When we're unmapping blocks from a reflinked file, decrease the
refcount of the affected blocks and free the extents that are no
longer in use.
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/libxfs/xfs_bmap.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 9d7f61d36645..907d7b8df7bb 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -48,6 +48,7 @@ #include "xfs_filestream.h" #include "xfs_rmap.h" #include "xfs_ag_resv.h" +#include "xfs_refcount.h" kmem_zone_t *xfs_bmap_free_item_zone; @@ -4988,9 +4989,16 @@ xfs_bmap_del_extent( /* * If we need to, add to list of extents to delete. */ - if (do_fx) - xfs_bmap_add_free(mp, dfops, del->br_startblock, - del->br_blockcount, NULL); + if (do_fx) { + if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { + error = xfs_refcount_decrease_extent(mp, dfops, del); + if (error) + goto done; + } else + xfs_bmap_add_free(mp, dfops, del->br_startblock, + del->br_blockcount, NULL); + } + /* * Adjust inode # blocks in the file. */ |
