[PATCH 05/18] xfs: move locking into xfs_bmap_punch_delalloc_range

Christoph Hellwig
2018-05-30T10:00:42Z

Both callers want the same looking, so do it only once.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_aops.c | 2 --
fs/xfs/xfs_bmap_util.c | 7 ++++---
fs/xfs/xfs_iomap.c | 3 ---
3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index f2333e351e07..5dd09e83c81c 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -761,10 +761,8 @@ xfs_aops_discard_page(
"page discard on page "PTR_FMT", inode 0x%llx, offset %llu.",
page, ip->i_ino, offset);

- xfs_ilock(ip, XFS_ILOCK_EXCL);
error = xfs_bmap_punch_delalloc_range(ip, start_fsb,
PAGE_SIZE / i_blocksize(inode));
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
if (error && !XFS_FORCED_SHUTDOWN(mp))
xfs_alert(mp, "page discard unable to remove delalloc mapping.");
out_invalidate:
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index f2b87873612d..86a7ee425bfc 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -712,12 +712,11 @@ xfs_bmap_punch_delalloc_range(
struct xfs_iext_cursor icur;
int error = 0;

- ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
-
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
if (error)
- return error;
+ goto out_unlock;
}

if (!xfs_iext_lookup_extent_before(ip, ifp, &end_fsb, &icur, &got))
@@ -738,6 +737,8 @@ xfs_bmap_punch_delalloc_range(
}
}

+out_unlock:
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
return error;
}

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index da6d1995e460..f949f0dd7382 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -1203,11 +1203,8 @@ xfs_file_iomap_end_delalloc(
truncate_pagecache_range(VFS_I(ip), XFS_FSB_TO_B(mp, start_fsb),
XFS_FSB_TO_B(mp, end_fsb) - 1);

- xfs_ilock(ip, XFS_ILOCK_EXCL);
error = xfs_bmap_punch_delalloc_range(ip, start_fsb,
end_fsb - start_fsb);
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
-
if (error && !XFS_FORCED_SHUTDOWN(mp)) {
xfs_alert(mp, "%s: unable to clean up ino %lld",
__func__, ip->i_ino);
--
2.17.0