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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-10 15:21:55 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-10 15:21:55 +0200
commitf78a8236c6502760705399dfa42e22ab11aa1e6b (patch)
treed965f09daff0d531c63e35c764e7061f9c43afe7 /fs/xfs/xfs_bmap_util.c
parent6cb3d05f3030deed157c9bbada5c58e7ee0f5172 (diff)
parent39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff)
Merge 4.11-rc6 into staging-next
We want the staging and iio fixes in here to handle merging easier. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/xfs/xfs_bmap_util.c')
-rw-r--r--fs/xfs/xfs_bmap_util.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 8b75dcea5966..828532ce0adc 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1311,8 +1311,16 @@ xfs_free_file_space(
/*
* Now that we've unmap all full blocks we'll have to zero out any
* partial block at the beginning and/or end. xfs_zero_range is
- * smart enough to skip any holes, including those we just created.
+ * smart enough to skip any holes, including those we just created,
+ * but we must take care not to zero beyond EOF and enlarge i_size.
*/
+
+ if (offset >= XFS_ISIZE(ip))
+ return 0;
+
+ if (offset + len > XFS_ISIZE(ip))
+ len = XFS_ISIZE(ip) - offset;
+
return xfs_zero_range(ip, offset, len, NULL);
}