diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-18 10:27:22 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-05-19 09:40:58 -0700 |
| commit | daf83964a3681cf1f1f255ad6095c0b60cba7dca (patch) | |
| tree | e87b88a211f431fa758d6cbb4d6bbc56f4dde533 /fs/xfs/libxfs/xfs_inode_fork.c | |
| parent | b2c20045b67bf37aa63be9bd9463708dfb38cbcc (diff) | |
xfs: move the per-fork nextents fields into struct xfs_ifork
There are there are three extents counters per inode, one for each of
the forks. Two are in the legacy icdinode and one is directly in
struct xfs_inode. Switch to a single counter in the xfs_ifork structure
where it uses up padding at the end of the structure. This simplifies
various bits of code that just wants the number of extents counter and
can now directly dereference it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Brian Foster <bfoster@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_inode_fork.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_inode_fork.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index 6c24c27f5f44..2702ad5ba995 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -188,12 +188,11 @@ xfs_iformat_btree( * or the number of extents is greater than the number of * blocks. */ - if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= - XFS_IFORK_MAXEXT(ip, whichfork) || + if (unlikely(ifp->if_nextents <= XFS_IFORK_MAXEXT(ip, whichfork) || nrecs == 0 || XFS_BMDR_SPACE_CALC(nrecs) > XFS_DFORK_SIZE(dip, mp, whichfork) || - XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks) || + ifp->if_nextents > ip->i_d.di_nblocks) || level == 0 || level > XFS_BTREE_MAXLEVELS) { xfs_warn(mp, "corrupt inode %Lu (btree).", (unsigned long long) ip->i_ino); @@ -229,6 +228,12 @@ xfs_iformat_data_fork( struct inode *inode = VFS_I(ip); int error; + /* + * Initialize the extent count early, as the per-format routines may + * depend on it. + */ + ip->i_df.if_nextents = be32_to_cpu(dip->di_nextents); + switch (inode->i_mode & S_IFMT) { case S_IFIFO: case S_IFCHR: @@ -281,7 +286,13 @@ xfs_iformat_attr_fork( { int error = 0; + /* + * Initialize the extent count early, as the per-format routines may + * depend on it. + */ ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_NOFS); + ip->i_afp->if_nextents = be16_to_cpu(dip->di_anextents); + switch (dip->di_aformat) { case XFS_DINODE_FMT_LOCAL: error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, @@ -617,7 +628,7 @@ xfs_iflush_fork( !(iip->ili_fields & extflag[whichfork])); if ((iip->ili_fields & extflag[whichfork]) && (ifp->if_bytes > 0)) { - ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0); + ASSERT(ifp->if_nextents > 0); (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp, whichfork); } @@ -676,7 +687,6 @@ xfs_ifork_init_cow( KM_NOFS); ip->i_cowfp->if_flags = XFS_IFEXTENTS; ip->i_cformat = XFS_DINODE_FMT_EXTENTS; - ip->i_cnextents = 0; } /* Verify the inline contents of the data fork of an inode. */ |