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>

1 files changed, 7 insertions, 3 deletions

diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index d115cb44b103..fbb74c715266 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1206,11 +1206,15 @@ xfs_inode_free_eofblocks(
 int
 xfs_icache_free_eofblocks(
         struct xfs_mount        *mp,
-        int                     flags)
+        struct xfs_eofblocks    *eofb)
 {
-        ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0);
+        int flags = SYNC_TRYLOCK;
+
+        if (eofb && (eofb->eof_flags & XFS_EOF_FLAGS_SYNC))
+                flags = SYNC_WAIT;
+
         return xfs_inode_ag_iterator_tag(mp, xfs_inode_free_eofblocks, flags,
-                                         NULL, XFS_ICI_EOFBLOCKS_TAG);
+                                         eofb, XFS_ICI_EOFBLOCKS_TAG);
 }
 
 void