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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 19:11:32 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-05 04:06:40 +0300 |
| commit | 3993baeb3c52f497d243a4a3b5510df97b22596b (patch) | |
| tree | 2dab55892137a064012b352a0f9ac730797221fb /fs/xfs/libxfs/xfs_rmap.c | |
| parent | 11715a21bc3035440b853a0334685f1a55ca8c3c (diff) | |
| download | linux-3993baeb3c52f497d243a4a3b5510df97b22596b.tar.xz | |
xfs: introduce the CoW fork
Introduce a new in-core fork for storing copy-on-write delalloc
reservations and allocated extents that are in the process of being
written out.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/libxfs/xfs_rmap.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_rmap.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c index 73d05407d663..1c40b851a21d 100644 --- a/fs/xfs/libxfs/xfs_rmap.c +++ b/fs/xfs/libxfs/xfs_rmap.c @@ -1263,9 +1263,10 @@ out_cur: */ static bool xfs_rmap_update_is_needed( - struct xfs_mount *mp) + struct xfs_mount *mp, + int whichfork) { - return xfs_sb_version_hasrmapbt(&mp->m_sb); + return xfs_sb_version_hasrmapbt(&mp->m_sb) && whichfork != XFS_COW_FORK; } /* @@ -1311,7 +1312,7 @@ xfs_rmap_map_extent( int whichfork, struct xfs_bmbt_irec *PREV) { - if (!xfs_rmap_update_is_needed(mp)) + if (!xfs_rmap_update_is_needed(mp, whichfork)) return 0; return __xfs_rmap_add(mp, dfops, XFS_RMAP_MAP, ip->i_ino, @@ -1327,7 +1328,7 @@ xfs_rmap_unmap_extent( int whichfork, struct xfs_bmbt_irec *PREV) { - if (!xfs_rmap_update_is_needed(mp)) + if (!xfs_rmap_update_is_needed(mp, whichfork)) return 0; return __xfs_rmap_add(mp, dfops, XFS_RMAP_UNMAP, ip->i_ino, @@ -1343,7 +1344,7 @@ xfs_rmap_convert_extent( int whichfork, struct xfs_bmbt_irec *PREV) { - if (!xfs_rmap_update_is_needed(mp)) + if (!xfs_rmap_update_is_needed(mp, whichfork)) return 0; return __xfs_rmap_add(mp, dfops, XFS_RMAP_CONVERT, ip->i_ino, @@ -1362,7 +1363,7 @@ xfs_rmap_alloc_extent( { struct xfs_bmbt_irec bmap; - if (!xfs_rmap_update_is_needed(mp)) + if (!xfs_rmap_update_is_needed(mp, XFS_DATA_FORK)) return 0; bmap.br_startblock = XFS_AGB_TO_FSB(mp, agno, bno); @@ -1386,7 +1387,7 @@ xfs_rmap_free_extent( { struct xfs_bmbt_irec bmap; - if (!xfs_rmap_update_is_needed(mp)) + if (!xfs_rmap_update_is_needed(mp, XFS_DATA_FORK)) return 0; bmap.br_startblock = XFS_AGB_TO_FSB(mp, agno, bno); |