lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

xfs: cleanup struct xfs_dir2_free

Browse Source 
Change the bests array to be a proper variable sized entry.  This is done
easily as no one relies on the size of the structure.  Also change
XFS_DIR2_MAX_FREE_BESTS to an inline function while we're at it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Christoph Hellwig
2011-07-13 13:43:48 +02:00
parent 5792664070
commit a00b7745c6
2 changed files with 12 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
fs/xfs/xfs_dir2_format.h
View File

@@ -516,13 +516,15 @@ typedef struct xfs_dir2_free_hdr {
typedef struct xfs_dir2_free {
xfs_dir2_free_hdr_t hdr; /* block header */
__be16 bests[1]; /* best free counts */
__be16 bests[]; /* best free counts */
/* unused entries are -1 */
} xfs_dir2_free_t;
#define XFS_DIR2_MAX_FREE_BESTS(mp) \
(((mp)->m_dirblksize - (uint)sizeof(struct xfs_dir2_free_hdr)) / \
(uint)sizeof(xfs_dir2_data_off_t))
static inline int xfs_dir2_free_max_bests(struct xfs_mount *mp)
{
return (mp->m_dirblksize - sizeof(struct xfs_dir2_free_hdr)) /
sizeof(xfs_dir2_data_off_t);
}
/*
* Convert data space db to the corresponding free db.
@@ -530,7 +532,7 @@ typedef struct xfs_dir2_free {
static inline xfs_dir2_db_t
xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db)
{
return XFS_DIR2_FREE_FIRSTDB(mp) + db / XFS_DIR2_MAX_FREE_BESTS(mp);
return XFS_DIR2_FREE_FIRSTDB(mp) + db / xfs_dir2_free_max_bests(mp);
}
/*
@@ -539,7 +541,7 @@ xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db)
static inline int
xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db)
{
return db % XFS_DIR2_MAX_FREE_BESTS(mp);
return db % xfs_dir2_free_max_bests(mp);
}
/*