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authorTheodore Ts'o <tytso@mit.edu>2009-02-26 01:04:07 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-02-26 01:04:07 -0500
commitccd2506bd43113659aa904d5bea5d1300605e2a6 (patch)
tree99a95645b3c2c092427b7c537c5628d502cd9c22 /fs/ext4/ioctl.c
parentf63e6005bc63acc0a6bc3bdb8f971dcfbd827185 (diff)
downloadop-kernel-dev-ccd2506bd43113659aa904d5bea5d1300605e2a6.zip
op-kernel-dev-ccd2506bd43113659aa904d5bea5d1300605e2a6.tar.gz
ext4: add EXT4_IOC_ALLOC_DA_BLKS ioctl
Add an ioctl which forces all of the delay allocated blocks to be allocated. This also provides a function ext4_alloc_da_blocks() which will be used by the following commits to force files to be fully allocated to preserve application-expected ext3 behaviour. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ioctl.c')
-rw-r--r--fs/ext4/ioctl.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 22dd29f..91e75f7 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -262,6 +262,20 @@ setversion_out:
return err;
}
+ case EXT4_IOC_ALLOC_DA_BLKS:
+ {
+ int err;
+ if (!is_owner_or_cap(inode))
+ return -EACCES;
+
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
+ err = ext4_alloc_da_blocks(inode);
+ mnt_drop_write(filp->f_path.mnt);
+ return err;
+ }
+
default:
return -ENOTTY;
}
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