[PATCH v6 09/10] xfs: add minimum file size filtering to eofblocks scan

Brian Foster
2012-11-06T14:46:58Z

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@redhat.com>
---
fs/xfs/xfs_fs.h | 6 ++++--
fs/xfs/xfs_icache.c | 11 +++++++++--
2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
index 88eb1bc..082b743 100644
--- a/fs/xfs/xfs_fs.h
+++ b/fs/xfs/xfs_fs.h
@@ -348,7 +348,8 @@ struct xfs_eofblocks {
uid_t eof_uid;
gid_t eof_gid;
prid_t eof_prid;
- __u32 pad[27];
+ __u64 eof_min_file_size;
+ __u32 pad[25];
};

/* eof_flags values */
@@ -356,9 +357,10 @@ struct xfs_eofblocks {
#define XFS_EOF_FLAGS_UID (1 << 1) /* filter by uid */
#define XFS_EOF_FLAGS_GID (1 << 2) /* filter by gid */
#define XFS_EOF_FLAGS_PRID (1 << 3) /* filter by project id */
+#define XFS_EOF_FLAGS_MINFILESIZE (1 << 4) /* filter by min file size */
#define XFS_EOF_FLAGS_VALID \
(XFS_EOF_FLAGS_SYNC|XFS_EOF_FLAGS_UID|XFS_EOF_FLAGS_GID| \
- XFS_EOF_FLAGS_PRID)
+ XFS_EOF_FLAGS_PRID|XFS_EOF_FLAGS_MINFILESIZE)

/*
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index d7372b1..6e63228 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1215,8 +1215,15 @@ xfs_inode_free_eofblocks(
mapping_tagged(VFS_I(ip)->i_mapping, PAGECACHE_TAG_DIRTY))
return 0;

- if (eofb && !xfs_inode_match_id(ip, eofb))
- return 0;
+ if (eofb) {
+ if (!xfs_inode_match_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