xfs: hide xfs_icache_free_cowblocks

mainline-inclusion
from mainline-v5.11-rc4
commit b943c0cd
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4KIAO
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b943c0cd5615233ae4cea66666725a9bf2edccca

-------------------------------------------------

Change the one remaining caller of xfs_icache_free_cowblocks to use our
new combined blockgc scan function instead, since we will soon be
combining the two scans.  This introduces a slight behavior change,
since a readonly remount now clears out post-EOF preallocations and not
just CoW staging extents.
Signed-off-by: NDarrick J. Wong <djwong@kernel.org>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NLihong Kou <koulihong@huawei.com>
Reviewed-by: NZhang Yi <yi.zhang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

fs/xfs/xfs_icache.c

@@ -1567,7 +1567,7 @@ xfs_inode_free_cowblocks(
 	return ret;
 }
 
-int
+static int
 xfs_icache_free_cowblocks(
 	struct xfs_mount	*mp,
 	struct xfs_eofblocks	*eofb)

fs/xfs/xfs_icache.h

@@ -67,7 +67,6 @@ void xfs_queue_eofblocks(struct xfs_mount *);
 
 void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
 void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);
-int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *);
 void xfs_cowblocks_worker(struct work_struct *);
 void xfs_queue_cowblocks(struct xfs_mount *);
 

fs/xfs/xfs_super.c

@@ -1737,7 +1737,7 @@ xfs_remount_ro(
 	xfs_stop_block_reaping(mp);
 
 	/* Get rid of any leftover CoW reservations... */
-	error = xfs_icache_free_cowblocks(mp, NULL);
+	error = xfs_blockgc_free_space(mp, NULL);
 	if (error) {
 		xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 		return error;