Merge tag 'xfs-5.20-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs updates from Darrick Wong:
 "The biggest changes for this release are the log scalability
  improvements, lockless lookups for the buffer cache, and making the
  attr fork a permanent part of the incore inode in preparation for
  directory parent pointers.

  There's also a bunch of bug fixes that have accumulated since -rc5. I
  might send you a second pull request with some more bug fixes that I'm
  still working on.

  Once the merge window ends, I will hand maintainership back to Dave
  Chinner until the 6.1-rc1 release so that I can conduct the design
  review for the online fsck feature, and try to get it merged.

  Summary:

   - Improve scalability of the XFS log by removing spinlocks and global
     synchronization points.

   - Add security labels to whiteout inodes to match the other
     filesystems.

   - Clean up per-ag pointer passing to simplify call sites.

   - Reduce verifier overhead by precalculating more AG geometry.

   - Implement fast-path lockless lookups in the buffer cache to reduce
     spinlock hammering.

   - Make attr forks a permanent part of the inode structure to fix a
     UAF bug and because most files these days tend to have security
     labels and soon will have parent pointers too.

   - Clean up XFS_IFORK_Q usage and give it a better name.

   - Fix more UAF bugs in the xattr code.

   - SOB my tags.

   - Fix some typos in the timestamp range documentation.

   - Fix a few more memory leaks.

   - Code cleanups and typo fixes.

   - Fix an unlocked inode fork pointer access in getbmap"

* tag 'xfs-5.20-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (61 commits)
  xfs: delete extra space and tab in blank line
  xfs: fix NULL pointer dereference in xfs_getbmap()
  xfs: Fix typo 'the the' in comment
  xfs: Fix comment typo
  xfs: don't leak memory when attr fork loading fails
  xfs: fix for variable set but not used warning
  xfs: xfs_buf cache destroy isn't RCU safe
  xfs: delete unnecessary NULL checks
  xfs: fix comment for start time value of inode with bigtime enabled
  xfs: fix use-after-free in xattr node block inactivation
  xfs: lockless buffer lookup
  xfs: remove a superflous hash lookup when inserting new buffers
  xfs: reduce the number of atomic when locking a buffer after lookup
  xfs: merge xfs_buf_find() and xfs_buf_get_map()
  xfs: break up xfs_buf_find() into individual pieces
  xfs: add in-memory iunlink log item
  xfs: add log item precommit operation
  xfs: combine iunlink inode update functions
  xfs: clean up xfs_iunlink_update_inode()
  xfs: double link the unlinked inode list
  ...

1 files changed, 10 insertions, 12 deletions

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 224649a76cbb..e28d93d232de 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -67,12 +67,10 @@ int
 xfs_inode_hasattr(
 	struct xfs_inode	*ip)
 {
-	if (!XFS_IFORK_Q(ip))
+	if (!xfs_inode_has_attr_fork(ip))
 		return 0;
-	if (!ip->i_afp)
-		return 0;
-	if (ip->i_afp->if_format == XFS_DINODE_FMT_EXTENTS &&
-	    ip->i_afp->if_nextents == 0)
+	if (ip->i_af.if_format == XFS_DINODE_FMT_EXTENTS &&
+	    ip->i_af.if_nextents == 0)
 		return 0;
 	return 1;
 }
@@ -85,7 +83,7 @@ bool
 xfs_attr_is_leaf(
 	struct xfs_inode	*ip)
 {
-	struct xfs_ifork	*ifp = ip->i_afp;
+	struct xfs_ifork	*ifp = &ip->i_af;
 	struct xfs_iext_cursor	icur;
 	struct xfs_bmbt_irec	imap;
 
@@ -231,7 +229,7 @@ xfs_attr_get_ilocked(
 	if (!xfs_inode_hasattr(args->dp))
 		return -ENOATTR;
 
-	if (args->dp->i_afp->if_format == XFS_DINODE_FMT_LOCAL)
+	if (args->dp->i_af.if_format == XFS_DINODE_FMT_LOCAL)
 		return xfs_attr_shortform_getvalue(args);
 	if (xfs_attr_is_leaf(args->dp))
 		return xfs_attr_leaf_get(args);
@@ -354,7 +352,7 @@ xfs_attr_try_sf_addname(
 	/*
 	 * Build initial attribute list (if required).
 	 */
-	if (dp->i_afp->if_format == XFS_DINODE_FMT_EXTENTS)
+	if (dp->i_af.if_format == XFS_DINODE_FMT_EXTENTS)
 		xfs_attr_shortform_create(args);
 
 	error = xfs_attr_shortform_addname(args);
@@ -864,7 +862,7 @@ xfs_attr_lookup(
 	if (!xfs_inode_hasattr(dp))
 		return -ENOATTR;
 
-	if (dp->i_afp->if_format == XFS_DINODE_FMT_LOCAL)
+	if (dp->i_af.if_format == XFS_DINODE_FMT_LOCAL)
 		return xfs_attr_sf_findname(args, NULL, NULL);
 
 	if (xfs_attr_is_leaf(dp)) {
@@ -1001,7 +999,7 @@ xfs_attr_set(
 		 * If the inode doesn't have an attribute fork, add one.
 		 * (inode must not be locked when we call this routine)
 		 */
-		if (XFS_IFORK_Q(dp) == 0) {
+		if (xfs_inode_has_attr_fork(dp) == 0) {
 			int sf_size = sizeof(struct xfs_attr_sf_hdr) +
 				xfs_attr_sf_entsize_byname(args->namelen,
 						args->valuelen);
@@ -1101,7 +1099,7 @@ static inline int xfs_attr_sf_totsize(struct xfs_inode *dp)
 {
 	struct xfs_attr_shortform *sf;
 
-	sf = (struct xfs_attr_shortform *)dp->i_afp->if_u1.if_data;
+	sf = (struct xfs_attr_shortform *)dp->i_af.if_u1.if_data;
 	return be16_to_cpu(sf->hdr.totsize);
 }
 
@@ -1558,7 +1556,7 @@ xfs_attr_node_get(
 	 * If not in a transaction, we have to release all the buffers.
 	 */
 out_release:
-	for (i = 0; state != NULL && i < state->path.active; i++) {
+	for (i = 0; i < state->path.active; i++) {
 		xfs_trans_brelse(args->trans, state->path.blk[i].bp);
 		state->path.blk[i].bp = NULL;
 	}