[PATCH v5 09/10] xfs: add minimum file size filtering to eofblocks scan

[Brian Foster]

Support minimum file size filtering in the eofblocks scan. The
caller must set the XFS_EOF_FLAGS_MINFILESIZE flags bit and minimum
file size value in bytes.

Signed-off-by: Brian Foster <bfoster at redhat.com>
---
 fs/xfs/xfs_fs.h     |    2 ++
 fs/xfs/xfs_icache.c |    5 +++++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
index 6ef9111..6d42b0d 100644
--- a/fs/xfs/xfs_fs.h
+++ b/fs/xfs/xfs_fs.h
@@ -347,12 +347,14 @@ struct xfs_eofblocks {
 	__u32		eof_flags;
 	__u32		eof_q_id;
 	__u32		eof_q_type;
+	__u32		eof_min_file_size;
 	unsigned char	pad[12];
 };
 
 /* eof_flags values */
 #define XFS_EOF_FLAGS_SYNC		0x01	/* sync/wait mode scan */
 #define XFS_EOF_FLAGS_QUOTA		0x02	/* filter by quota id */
+#define XFS_EOF_FLAGS_MINFILESIZE	0x04	/* filter by min file size */
 
 
 /*
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index b39970b..ffd7f86 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1216,6 +1216,11 @@ xfs_inode_free_eofblocks(
 		if (eofb->eof_flags & XFS_EOF_FLAGS_QUOTA &&
 		    !xfs_inode_match_quota_id(ip, eofb))
 			return 0;
+
+		/* skip the inode if the file size is too small */
+		if (eofb->eof_flags & XFS_EOF_FLAGS_MINFILESIZE &&
+		    XFS_ISIZE(ip) < eofb->eof_min_file_size)
+			return 0;
 	}
 
 	ret = xfs_free_eofblocks(ip->i_mount, ip, true);
-- 
1.7.7.6