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xfs: remove if_real_bytes

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The field is only used for asserts, and to track if we really need to do
realloc when growing the inode fork data.  But the krealloc function
already performs this check internally, so there is no need to keep track
of the real allocation size.

This will free space in the inode fork for keeping a sequence counter of
changes to the extent list.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig
2018-07-17 16:51:50 -07:00
committed by Darrick J. Wong
parent bc270b53e6
commit fcacbc3f51
4 changed files with 5 additions and 22 deletions
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3
fs/xfs/xfs_inode.c
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@@ -927,7 +927,7 @@ xfs_ialloc(
case S_IFLNK:
ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
ip->i_df.if_flags = XFS_IFEXTENTS;
ip->i_df.if_bytes = ip->i_df.if_real_bytes = 0;
ip->i_df.if_bytes = 0;
ip->i_df.if_u1.if_root = NULL;
break;
default:
@@ -1841,7 +1841,6 @@ xfs_inactive(
* to clean up here.
*/
if (VFS_I(ip)->i_mode == 0) {
ASSERT(ip->i_df.if_real_bytes == 0);
ASSERT(ip->i_df.if_broot_bytes == 0);
return;
}