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| author | Christoph Hellwig <hch@lst.de> | 2018-07-17 16:51:51 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-07-31 13:18:09 -0700 |
| commit | 745b3f76d1c889d738a1c4537a3c491bc1ecac4d (patch) | |
| tree | 29a159f817cb3779f93f6d9140152da18091bb40 /fs/xfs/libxfs/xfs_iext_tree.c | |
| parent | 9e037cb7972fab5a9f55bca4ebe6e4dbf7e160bc (diff) | |
| download | kernel_replicant_linux-745b3f76d1c889d738a1c4537a3c491bc1ecac4d.tar.gz kernel_replicant_linux-745b3f76d1c889d738a1c4537a3c491bc1ecac4d.tar.bz2 kernel_replicant_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; |