summaryrefslogtreecommitdiffstats
path: root/fs/xfs
diff options
context:
space:
mode:
authorDave Chinner <dchinner@redhat.com>2014-04-14 18:15:11 +1000
committerDave Chinner <david@fromorbit.com>2014-04-14 18:15:11 +1000
commit897b73b6a2ee5d3c06648b601beb1724f7fbd678 (patch)
treeff158ae7a438e38ee856eb8fd213350a052ffd45 /fs/xfs
parentaad3f3755e7f043789b772856d1a2935f2b41a4b (diff)
downloadop-kernel-dev-897b73b6a2ee5d3c06648b601beb1724f7fbd678.zip
op-kernel-dev-897b73b6a2ee5d3c06648b601beb1724f7fbd678.tar.gz
xfs: zeroing space needs to punch delalloc blocks
When we are zeroing space andit is covered by a delalloc range, we need to punch the delalloc range out before we truncate the page cache. Failing to do so leaves and inconsistency between the page cache and the extent tree, which we later trip over when doing direct IO over the same range. Signed-off-by: Dave Chinner <dchinner@redhat.com> Tested-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_bmap_util.c13
-rw-r--r--fs/xfs/xfs_trace.h1
2 files changed, 13 insertions, 1 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 01f6a64..296160b 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1418,6 +1418,8 @@ xfs_zero_file_space(
xfs_off_t end_boundary;
int error;
+ trace_xfs_zero_file_space(ip);
+
granularity = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
/*
@@ -1432,9 +1434,18 @@ xfs_zero_file_space(
ASSERT(end_boundary <= offset + len);
if (start_boundary < end_boundary - 1) {
- /* punch out the page cache over the conversion range */
+ /*
+ * punch out delayed allocation blocks and the page cache over
+ * the conversion range
+ */
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ error = xfs_bmap_punch_delalloc_range(ip,
+ XFS_B_TO_FSBT(mp, start_boundary),
+ XFS_B_TO_FSB(mp, end_boundary - start_boundary));
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
truncate_pagecache_range(VFS_I(ip), start_boundary,
end_boundary - 1);
+
/* convert the blocks */
error = xfs_alloc_file_space(ip, start_boundary,
end_boundary - start_boundary - 1,
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index a4ae41c..65d8c79 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -603,6 +603,7 @@ DEFINE_INODE_EVENT(xfs_readlink);
DEFINE_INODE_EVENT(xfs_inactive_symlink);
DEFINE_INODE_EVENT(xfs_alloc_file_space);
DEFINE_INODE_EVENT(xfs_free_file_space);
+DEFINE_INODE_EVENT(xfs_zero_file_space);
DEFINE_INODE_EVENT(xfs_collapse_file_space);
DEFINE_INODE_EVENT(xfs_readdir);
#ifdef CONFIG_XFS_POSIX_ACL
OpenPOWER on IntegriCloud