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path: root/fs/xfs/xfs_dir2_sf.c
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Diffstat (limited to 'fs/xfs/xfs_dir2_sf.c')
-rw-r--r--fs/xfs/xfs_dir2_sf.c58
1 files changed, 34 insertions, 24 deletions
diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c
index aafc6e46cb5..3725fb1b902 100644
--- a/fs/xfs/xfs_dir2_sf.c
+++ b/fs/xfs/xfs_dir2_sf.c
@@ -170,6 +170,7 @@ xfs_dir2_block_to_sf(
char *ptr; /* current data pointer */
xfs_dir2_sf_entry_t *sfep; /* shortform entry */
xfs_dir2_sf_hdr_t *sfp; /* shortform directory header */
+ xfs_dir2_sf_hdr_t *dst; /* temporary data buffer */
trace_xfs_dir2_block_to_sf(args);
@@ -177,35 +178,20 @@ xfs_dir2_block_to_sf(
mp = dp->i_mount;
/*
- * Make a copy of the block data, so we can shrink the inode
- * and add local data.
+ * allocate a temporary destination buffer the size of the inode
+ * to format the data into. Once we have formatted the data, we
+ * can free the block and copy the formatted data into the inode literal
+ * area.
*/
- hdr = kmem_alloc(mp->m_dirblksize, KM_SLEEP);
- memcpy(hdr, bp->b_addr, mp->m_dirblksize);
- logflags = XFS_ILOG_CORE;
- if ((error = xfs_dir2_shrink_inode(args, mp->m_dirdatablk, bp))) {
- ASSERT(error != ENOSPC);
- goto out;
- }
+ dst = kmem_alloc(mp->m_sb.sb_inodesize, KM_SLEEP);
+ hdr = bp->b_addr;
/*
- * The buffer is now unconditionally gone, whether
- * xfs_dir2_shrink_inode worked or not.
- *
- * Convert the inode to local format.
- */
- dp->i_df.if_flags &= ~XFS_IFEXTENTS;
- dp->i_df.if_flags |= XFS_IFINLINE;
- dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
- ASSERT(dp->i_df.if_bytes == 0);
- xfs_idata_realloc(dp, size, XFS_DATA_FORK);
- logflags |= XFS_ILOG_DDATA;
- /*
* Copy the header into the newly allocate local space.
*/
- sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
+ sfp = (xfs_dir2_sf_hdr_t *)dst;
memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count));
- dp->i_d.di_size = size;
+
/*
* Set up to loop over the block's entries.
*/
@@ -258,10 +244,34 @@ xfs_dir2_block_to_sf(
ptr += dp->d_ops->data_entsize(dep->namelen);
}
ASSERT((char *)sfep - (char *)sfp == size);
+
+ /* now we are done with the block, we can shrink the inode */
+ logflags = XFS_ILOG_CORE;
+ error = xfs_dir2_shrink_inode(args, mp->m_dirdatablk, bp);
+ if (error) {
+ ASSERT(error != ENOSPC);
+ goto out;
+ }
+
+ /*
+ * The buffer is now unconditionally gone, whether
+ * xfs_dir2_shrink_inode worked or not.
+ *
+ * Convert the inode to local format and copy the data in.
+ */
+ dp->i_df.if_flags &= ~XFS_IFEXTENTS;
+ dp->i_df.if_flags |= XFS_IFINLINE;
+ dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
+ ASSERT(dp->i_df.if_bytes == 0);
+ xfs_idata_realloc(dp, size, XFS_DATA_FORK);
+
+ logflags |= XFS_ILOG_DDATA;
+ memcpy(dp->i_df.if_u1.if_data, dst, size);
+ dp->i_d.di_size = size;
xfs_dir2_sf_check(args);
out:
xfs_trans_log_inode(args->trans, dp, logflags);
- kmem_free(hdr);
+ kmem_free(dst);
return error;
}