Messages in this thread Patch in this message | | | From | Josef Bacik <> | Subject | [PATCH 2/6] XFS: handle hole punching via fallocate properly | Date | Mon, 15 Nov 2010 12:05:19 -0500 |
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This patch simply allows XFS to handle the hole punching flag in fallocate properly. I've tested this with a little program that does a bunch of random hole punching with FL_KEEP_SIZE and without it to make sure it does the right thing. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com> --- fs/xfs/linux-2.6/xfs_iops.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 96107ef..63cc929 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -516,6 +516,7 @@ xfs_vn_fallocate( loff_t new_size = 0; xfs_flock64_t bf; xfs_inode_t *ip = XFS_I(inode); + int cmd = XFS_IOC_RESVSP; /* preallocation on directories not yet supported */ error = -ENODEV; @@ -528,8 +529,11 @@ xfs_vn_fallocate( xfs_ilock(ip, XFS_IOLOCK_EXCL); + if (mode & FALLOC_FL_PUNCH_HOLE) + cmd = XFS_IOC_UNRESVSP; + /* check the new inode size is valid before allocating */ - if (!(mode & FALLOC_FL_KEEP_SIZE) && + if (!(mode & (FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) && offset + len > i_size_read(inode)) { new_size = offset + len; error = inode_newsize_ok(inode, new_size); @@ -537,8 +541,7 @@ xfs_vn_fallocate( goto out_unlock; } - error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, - 0, XFS_ATTR_NOLOCK); + error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK); if (error) goto out_unlock; -- 1.6.6.1
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