[XFS] split up xlog_recover_process_iunlinks
Split out the body of the main loop into a separate helper to make the
code readable.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 4099618..841398d 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -3147,6 +3147,70 @@
return;
}
+STATIC xfs_agino_t
+xlog_recover_process_one_iunlink(
+ struct xfs_mount *mp,
+ xfs_agnumber_t agno,
+ xfs_agino_t agino,
+ int bucket)
+{
+ struct xfs_buf *ibp;
+ struct xfs_dinode *dip;
+ struct xfs_inode *ip;
+ xfs_ino_t ino;
+ int error;
+
+ ino = XFS_AGINO_TO_INO(mp, agno, agino);
+ error = xfs_iget(mp, NULL, ino, 0, 0, &ip, 0);
+ if (error)
+ goto fail;
+
+ /*
+ * Get the on disk inode to find the next inode in the bucket.
+ */
+ ASSERT(ip != NULL);
+ error = xfs_itobp(mp, NULL, ip, &dip, &ibp, 0, 0, XFS_BUF_LOCK);
+ if (error)
+ goto fail;
+
+ ASSERT(dip != NULL);
+ ASSERT(ip->i_d.di_nlink == 0);
+
+ /* setup for the next pass */
+ agino = be32_to_cpu(dip->di_next_unlinked);
+ xfs_buf_relse(ibp);
+
+ /*
+ * Prevent any DMAPI event from being sent when the reference on
+ * the inode is dropped.
+ */
+ ip->i_d.di_dmevmask = 0;
+
+ /*
+ * If this is a new inode, handle it specially. Otherwise, just
+ * drop our reference to the inode. If there are no other
+ * references, this will send the inode to xfs_inactive() which
+ * will truncate the file and free the inode.
+ */
+ if (ip->i_d.di_mode == 0)
+ xfs_iput_new(ip, 0);
+ else
+ IRELE(ip);
+ return agino;
+
+ fail:
+ /*
+ * We can't read in the inode this bucket points to, or this inode
+ * is messed up. Just ditch this bucket of inodes. We will lose
+ * some inodes and space, but at least we won't hang.
+ *
+ * Call xlog_recover_clear_agi_bucket() to perform a transaction to
+ * clear the inode pointer in the bucket.
+ */
+ xlog_recover_clear_agi_bucket(mp, agno, bucket);
+ return NULLAGINO;
+}
+
/*
* xlog_iunlink_recover
*
@@ -3167,11 +3231,7 @@
xfs_agnumber_t agno;
xfs_agi_t *agi;
xfs_buf_t *agibp;
- xfs_buf_t *ibp;
- xfs_dinode_t *dip;
- xfs_inode_t *ip;
xfs_agino_t agino;
- xfs_ino_t ino;
int bucket;
int error;
uint mp_dmevmask;
@@ -3201,10 +3261,8 @@
agi = XFS_BUF_TO_AGI(agibp);
for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) {
-
agino = be32_to_cpu(agi->agi_unlinked[bucket]);
while (agino != NULLAGINO) {
-
/*
* Release the agi buffer so that it can
* be acquired in the normal course of the
@@ -3212,68 +3270,8 @@
*/
xfs_buf_relse(agibp);
- ino = XFS_AGINO_TO_INO(mp, agno, agino);
- error = xfs_iget(mp, NULL, ino, 0, 0, &ip, 0);
- ASSERT(error || (ip != NULL));
-
- if (!error) {
- /*
- * Get the on disk inode to find the
- * next inode in the bucket.
- */
- error = xfs_itobp(mp, NULL, ip, &dip,
- &ibp, 0, 0,
- XFS_BUF_LOCK);
- ASSERT(error || (dip != NULL));
- }
-
- if (!error) {
- ASSERT(ip->i_d.di_nlink == 0);
-
- /* setup for the next pass */
- agino = be32_to_cpu(
- dip->di_next_unlinked);
- xfs_buf_relse(ibp);
- /*
- * Prevent any DMAPI event from
- * being sent when the
- * reference on the inode is
- * dropped.
- */
- ip->i_d.di_dmevmask = 0;
-
- /*
- * If this is a new inode, handle
- * it specially. Otherwise,
- * just drop our reference to the
- * inode. If there are no
- * other references, this will
- * send the inode to
- * xfs_inactive() which will
- * truncate the file and free
- * the inode.
- */
- if (ip->i_d.di_mode == 0)
- xfs_iput_new(ip, 0);
- else
- IRELE(ip);
- } else {
- /*
- * We can't read in the inode
- * this bucket points to, or
- * this inode is messed up. Just
- * ditch this bucket of inodes. We
- * will lose some inodes and space,
- * but at least we won't hang. Call
- * xlog_recover_clear_agi_bucket()
- * to perform a transaction to clear
- * the inode pointer in the bucket.
- */
- xlog_recover_clear_agi_bucket(mp, agno,
- bucket);
-
- agino = NULLAGINO;
- }
+ agino = xlog_recover_process_one_iunlink(mp,
+ agno, agino, bucket);
/*
* Reacquire the agibuffer and continue around