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xfs: remove the special COW fork handling in xfs_bmapi_read 

We don't call xfs_bmapi_read for the COW fork anymore, so remove the
special casing.

Signed-off-by: Christoph Hellwig <hch@lst.de>
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>
This commit is contained in:
Christoph Hellwig 2020-05-14 14:06:40 -07:00 committed by Darrick J. Wong
parent 0f45a1b20c
commit 1a1c57b282
1 changed files with 1 additions and 12 deletions
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13
fs/xfs/libxfs/xfs_bmap.c
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@ -3902,8 +3902,7 @@ xfs_bmapi_read(
int whichfork = xfs_bmapi_whichfork(flags);
ASSERT(*nmap >= 1);
ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE|
XFS_BMAPI_COWFORK)));
ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_ENTIRE)));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL));
if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ip, whichfork)) ||
@ -3918,16 +3917,6 @@ xfs_bmapi_read(
ifp = XFS_IFORK_PTR(ip, whichfork);
if (!ifp) {
/* No CoW fork? Return a hole. */
if (whichfork == XFS_COW_FORK) {
mval->br_startoff = bno;
mval->br_startblock = HOLESTARTBLOCK;
mval->br_blockcount = len;
mval->br_state = XFS_EXT_NORM;
*nmap = 1;
return 0;
}
/*
* A missing attr ifork implies that the inode says we're in
* extents or btree format but failed to pass the inode fork