diff options
| author | Brian Foster <bfoster@redhat.com> | 2012-11-07 12:21:12 -0500 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-11-08 15:27:49 -0600 |
| commit | 8ca149de80478441352a8622ea15fae7de703ced (patch) | |
| tree | d98cd5200aa1180b01925a400fe6e4155e0e5a0b /fs/xfs/xfs_ioctl.c | |
| parent | 41176a68e3f710630feace536d0277a092e206b5 (diff) | |
xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl
The XFS_IOC_FREE_EOFBLOCKS ioctl allows users to invoke an EOFBLOCKS
scan. The xfs_eofblocks structure is defined to support the command
parameters (scan mode).
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_ioctl.c')
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index c1df3c623de2..5b20ab0b4f9d 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -42,6 +42,7 @@ #include "xfs_inode_item.h" #include "xfs_export.h" #include "xfs_trace.h" +#include "xfs_icache.h" #include <linux/capability.h> #include <linux/dcache.h> @@ -1602,6 +1603,25 @@ xfs_file_ioctl( error = xfs_errortag_clearall(mp, 1); return -error; + case XFS_IOC_FREE_EOFBLOCKS: { + struct xfs_eofblocks eofb; + + if (copy_from_user(&eofb, arg, sizeof(eofb))) + return -XFS_ERROR(EFAULT); + + if (eofb.eof_version != XFS_EOFBLOCKS_VERSION) + return -XFS_ERROR(EINVAL); + + if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID) + return -XFS_ERROR(EINVAL); + + if (memchr_inv(eofb.pad, 0, sizeof(eofb.pad))) + return -XFS_ERROR(EINVAL); + + error = xfs_icache_free_eofblocks(mp, &eofb); + return -error; + } + default: return -ENOTTY; } |