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xfs: m_maxioffset is redundant

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The m_maxioffset field in the struct xfs_mount contains the same
value as the superblock s_maxbytes field. There is no need to carry
two copies of this limit around, so use the VFS superblock version.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner 2012-06-08 15:44:53 +10:00 committed by Ben Myers
parent 0f2cf9d3d9
commit d2c2819117
4 changed files with 9 additions and 12 deletions
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12
fs/xfs/xfs_aops.c
View File

@ -323,10 +323,10 @@ xfs_map_blocks(
ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
(ip->i_df.if_flags & XFS_IFEXTENTS));
ASSERT(offset <= mp->m_maxioffset);
ASSERT(offset <= mp->m_super->s_maxbytes);
if (offset + count > mp->m_maxioffset)
count = mp->m_maxioffset - offset;
if (offset + count > mp->m_super->s_maxbytes)
count = mp->m_super->s_maxbytes - offset;
end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
offset_fsb = XFS_B_TO_FSBT(mp, offset);
error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb,
@ -1162,9 +1162,9 @@ __xfs_get_blocks(
lockmode = xfs_ilock_map_shared(ip);
}
ASSERT(offset <= mp->m_maxioffset);
if (offset + size > mp->m_maxioffset)
size = mp->m_maxioffset - offset;
ASSERT(offset <= mp->m_super->s_maxbytes);
if (offset + size > mp->m_super->s_maxbytes)
size = mp->m_super->s_maxbytes - offset;
end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size);
offset_fsb = XFS_B_TO_FSBT(mp, offset);

4
fs/xfs/xfs_iomap.c
View File

@ -416,8 +416,8 @@ retry:
* Make sure preallocation does not create extents beyond the range we
* actually support in this filesystem.
*/
if (last_fsb > XFS_B_TO_FSB(mp, mp->m_maxioffset))
last_fsb = XFS_B_TO_FSB(mp, mp->m_maxioffset);
if (last_fsb > XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes))
last_fsb = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
ASSERT(last_fsb > offset_fsb);

2
fs/xfs/xfs_mount.c
View File

@ -1200,8 +1200,6 @@ xfs_mountfs(
xfs_set_maxicount(mp);
mp->m_maxioffset = xfs_max_file_offset(sbp->sb_blocklog);
error = xfs_uuid_mount(mp);
if (error)
goto out;

3
fs/xfs/xfs_mount.h
View File

@ -176,7 +176,6 @@ typedef struct xfs_mount {
uint m_qflags; /* quota status flags */
xfs_trans_reservations_t m_reservations;/* precomputed res values */
__uint64_t m_maxicount; /* maximum inode count */
__uint64_t m_maxioffset; /* maximum inode offset */
__uint64_t m_resblks; /* total reserved blocks */
__uint64_t m_resblks_avail;/* available reserved blocks */
__uint64_t m_resblks_save; /* reserved blks @ remount,ro */
@ -297,7 +296,7 @@ xfs_preferred_iosize(xfs_mount_t *mp)
PAGE_CACHE_SIZE));
}
#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
#define XFS_MAXIOFFSET(mp) ((mp)->m_super->s_maxbytes)
#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)