diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-07-18 01:51:51 +0200 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-07-31 22:18:09 +0200 |
| commit | 745b3f76d1c889d738a1c4537a3c491bc1ecac4d (patch) | |
| tree | 29a159f817cb3779f93f6d9140152da18091bb40 /fs/xfs/libxfs/xfs_iext_tree.c | |
| parent | xfs: check for unknown v5 feature bits in superblock write verifier (diff) | |
| download | linux-745b3f76d1c889d738a1c4537a3c491bc1ecac4d.tar.xz linux-745b3f76d1c889d738a1c4537a3c491bc1ecac4d.zip | |
xfs: maintain a sequence count for inode fork manipulations
Add a simple 32-bit unsigned integer as the sequence count for
modifications to the extent list in the inode fork. This will be
used to optimize away extent list lookups in the writeback code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_iext_tree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_iext_tree.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_iext_tree.c b/fs/xfs/libxfs/xfs_iext_tree.c index b80c63faace2..8a7aea041ee1 100644 --- a/fs/xfs/libxfs/xfs_iext_tree.c +++ b/fs/xfs/libxfs/xfs_iext_tree.c @@ -624,6 +624,8 @@ xfs_iext_insert( struct xfs_iext_leaf *new = NULL; int nr_entries, i; + ifp->if_seq++; + if (ifp->if_height == 0) xfs_iext_alloc_root(ifp, cur); else if (ifp->if_height == 1) @@ -864,6 +866,8 @@ xfs_iext_remove( ASSERT(ifp->if_u1.if_root != NULL); ASSERT(xfs_iext_valid(ifp, cur)); + ifp->if_seq++; + nr_entries = xfs_iext_leaf_nr_entries(ifp, leaf, cur->pos) - 1; for (i = cur->pos; i < nr_entries; i++) leaf->recs[i] = leaf->recs[i + 1]; @@ -970,6 +974,8 @@ xfs_iext_update_extent( { struct xfs_ifork *ifp = xfs_iext_state_to_fork(ip, state); + ifp->if_seq++; + if (cur->pos == 0) { struct xfs_bmbt_irec old; |