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authorJosef Bacik <josef@redhat.com>2010-11-17 20:46:16 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-12 20:16:43 -0500
commitc25d246715b87ad37e69e7abd1a0fed781423fa2 (patch)
tree18c13bcaa9e125a362d7d0ff24787d859d8d9b64 /fs/xfs/linux-2.6
parent79124f18b335172e1916075c633745e12dae1dac (diff)
XFS: handle hole punching via fallocate properly
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> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/xfs/linux-2.6')
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 94d5fd6a297..da54403633b 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;
@@ -528,6 +529,9 @@ 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) &&
offset + len > i_size_read(inode)) {
@@ -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;