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[XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config 

Use XFS_IS_REALTIME_INODE in more places, and #define it to 0 if
CONFIG_XFS_RT is off. This should be safe because mount checks in
xfs_rtmount_init:

so if we get mounted w/o CONFIG_XFS_RT, no realtime inodes should be
encountered after that.

Defining XFS_IS_REALTIME_INODE to 0 saves a bit of stack space,
presumeably gcc can optimize around the various "if (0)" type checks:

xfs_alloc_file_space -8 xfs_bmap_adjacent -16 xfs_bmapi -8
xfs_bmap_rtalloc -16 xfs_bunmapi -28 xfs_free_file_space -64 xfs_imap +8
<-- ? hmm. xfs_iomap_write_direct -12 xfs_qm_dqusage_adjust -4
xfs_qm_vop_chown_reserve -4

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30014a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Eric Sandeen 2007-11-23 16:29:42 +11:00 committed by Lachlan McIlroy
parent a67d7c5f5d
commit 71ddabb94a
13 changed files with 32 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/xfs/linux-2.6/xfs_aops.c
View File

@ -113,7 +113,7 @@ xfs_find_bdev_for_inode(
{
struct xfs_mount *mp = ip->i_mount;
if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
if (XFS_IS_REALTIME_INODE(ip))
return mp->m_rtdev_targp->bt_bdev;
else
return mp->m_ddev_targp->bt_bdev;

2
fs/xfs/linux-2.6/xfs_ioctl.c
View File

@ -741,7 +741,7 @@ xfs_ioctl(
case XFS_IOC_DIOINFO: {
struct dioattr da;
xfs_buftarg_t *target =
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
XFS_IS_REALTIME_INODE(ip) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
da.d_mem = da.d_miniosz = 1 << target->bt_sshift;

2
fs/xfs/linux-2.6/xfs_iops.c
View File

@ -612,7 +612,7 @@ xfs_vn_getattr(
sysv_minor(ip->i_df.if_u2.if_rdev));
break;
default:
if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) {
if (XFS_IS_REALTIME_INODE(ip)) {
/*
* If the file blocks are being allocated from a
* realtime volume, then return the inode's realtime

4
fs/xfs/linux-2.6/xfs_lrw.c
View File

@ -202,7 +202,7 @@ xfs_read(
if (unlikely(ioflags & IO_ISDIRECT)) {
xfs_buftarg_t *target =
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
XFS_IS_REALTIME_INODE(ip) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
if ((*offset & target->bt_smask) ||
(size & target->bt_smask)) {
@ -657,7 +657,7 @@ start:
if (ioflags & IO_ISDIRECT) {
xfs_buftarg_t *target =
(xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
XFS_IS_REALTIME_INODE(xip) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
if ((pos & target->bt_smask) || (count & target->bt_smask)) {

5
fs/xfs/xfs_bmap.c
View File

@ -2969,7 +2969,7 @@ STATIC int
xfs_bmap_alloc(
xfs_bmalloca_t *ap) /* bmap alloc argument struct */
{
if ((ap->ip->i_d.di_flags & XFS_DIFLAG_REALTIME) && ap->userdata)
if (XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata)
return xfs_bmap_rtalloc(ap);
return xfs_bmap_btalloc(ap);
}
@ -3096,8 +3096,7 @@ xfs_bmap_del_extent(
/*
* Realtime allocation. Free it and record di_nblocks update.
*/
if (whichfork == XFS_DATA_FORK &&
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) {
xfs_fsblock_t bno;
xfs_filblks_t len;

3
fs/xfs/xfs_bmap_btree.c
View File

@ -2062,8 +2062,7 @@ xfs_bmbt_insert(
pcur->bc_private.b.allocated;
pcur->bc_private.b.allocated = 0;
ASSERT((cur->bc_private.b.firstblock != NULLFSBLOCK) ||
(cur->bc_private.b.ip->i_d.di_flags &
XFS_DIFLAG_REALTIME));
XFS_IS_REALTIME_INODE(cur->bc_private.b.ip));
cur->bc_private.b.firstblock =
pcur->bc_private.b.firstblock;
ASSERT(cur->bc_private.b.flist ==

3
fs/xfs/xfs_dfrag.c
View File

@ -185,8 +185,7 @@ xfs_swap_extents(
}
/* Verify both files are either real-time or non-realtime */
if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) !=
(tip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) {
error = XFS_ERROR(EINVAL);
goto error0;
}

6
fs/xfs/xfs_dinode.h
View File

@ -273,6 +273,12 @@ typedef enum xfs_dinode_fmt
#define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
#define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT)
#ifdef CONFIG_XFS_RT
#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
#else
#define XFS_IS_REALTIME_INODE(ip) (0)
#endif
#define XFS_DIFLAG_ANY \
(XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \

5
fs/xfs/xfs_inode.c
View File

@ -1296,7 +1296,10 @@ xfs_isize_check(
if ((ip->i_d.di_mode & S_IFMT) != S_IFREG)
return;
if (ip->i_d.di_flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_EXTSIZE))
if (XFS_IS_REALTIME_INODE(ip))
return;
if (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
return;
nimaps = 2;

10
fs/xfs/xfs_iomap.c
View File

@ -141,7 +141,7 @@ xfs_imap_to_bmap(
iomapp->iomap_bsize = XFS_FSB_TO_B(mp, imap->br_blockcount);
iomapp->iomap_flags = flags;
if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) {
if (XFS_IS_REALTIME_INODE(ip)) {
iomapp->iomap_flags |= IOMAP_REALTIME;
iomapp->iomap_target = mp->m_rtdev_targp;
} else {
@ -298,7 +298,7 @@ xfs_iomap_eof_align_last_fsb(
xfs_extlen_t align;
int eof, error;
if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
if (XFS_IS_REALTIME_INODE(ip))
;
/*
* If mounted with the "-o swalloc" option, roundup the allocation
@ -524,7 +524,7 @@ xfs_iomap_write_direct(
}
if (unlikely(!imap.br_startblock &&
!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME))) {
!(XFS_IS_REALTIME_INODE(ip)))) {
error = xfs_cmn_err_fsblock_zero(ip, &imap);
goto error_out;
}
@ -687,7 +687,7 @@ retry:
}
if (unlikely(!imap[0].br_startblock &&
!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)))
!(XFS_IS_REALTIME_INODE(ip))))
return xfs_cmn_err_fsblock_zero(ip, &imap[0]);
*ret_imap = imap[0];
@ -932,7 +932,7 @@ xfs_iomap_write_unwritten(
return XFS_ERROR(error);
if (unlikely(!imap.br_startblock &&
!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)))
!(XFS_IS_REALTIME_INODE(ip))))
return xfs_cmn_err_fsblock_zero(ip, &imap);
if ((numblks_fsb = imap.br_blockcount) == 0) {

2
fs/xfs/xfs_rtalloc.h
View File

@ -21,8 +21,6 @@
struct xfs_mount;
struct xfs_trans;
#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)
/* Min and max rt extent sizes, specified in bytes */
#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024) /* 1GB */
#define XFS_DFL_RTEXTSIZE (64 * 1024) /* 64KB */

4
fs/xfs/xfs_rw.h
View File

@ -32,7 +32,7 @@ struct xfs_mount;
static inline xfs_daddr_t
xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
{
return (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) ? \
return (XFS_IS_REALTIME_INODE(ip) ? \
(xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \
XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
}
@ -53,7 +53,7 @@ xfs_get_extsz_hint(
{
xfs_extlen_t extsz;
if (unlikely(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
if (unlikely(XFS_IS_REALTIME_INODE(ip))) {
extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
? ip->i_d.di_extsize
: ip->i_mount->m_sb.sb_rextsize;

12
fs/xfs/xfs_vnodeops.c
View File

@ -136,7 +136,7 @@ xfs_getattr(
default:
vap->va_rdev = 0;
if (!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
if (!(XFS_IS_REALTIME_INODE(ip))) {
vap->va_blocksize = xfs_preferred_iosize(mp);
} else {
@ -508,7 +508,7 @@ xfs_setattr(
*/
if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
(mask & XFS_AT_XFLAGS) &&
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) !=
(XFS_IS_REALTIME_INODE(ip)) !=
(vap->va_xflags & XFS_XFLAG_REALTIME)) {
code = XFS_ERROR(EINVAL); /* EFBIG? */
goto error_return;
@ -520,7 +520,7 @@ xfs_setattr(
if ((mask & XFS_AT_EXTSIZE) && vap->va_extsize != 0) {
xfs_extlen_t size;
if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ||
if (XFS_IS_REALTIME_INODE(ip) ||
((mask & XFS_AT_XFLAGS) &&
(vap->va_xflags & XFS_XFLAG_REALTIME))) {
size = mp->m_sb.sb_rextsize <<
@ -1144,7 +1144,7 @@ xfs_fsync(
* If this inode is on the RT dev we need to flush that
* cache as well.
*/
if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
if (XFS_IS_REALTIME_INODE(ip))
xfs_blkdev_issue_flush(ip->i_mount->m_rtdev_targp);
}
@ -4044,7 +4044,7 @@ xfs_zero_remaining_bytes(
int error = 0;
bp = xfs_buf_get_noaddr(mp->m_sb.sb_blocksize,
ip->i_d.di_flags & XFS_DIFLAG_REALTIME ?
XFS_IS_REALTIME_INODE(ip) ?
mp->m_rtdev_targp : mp->m_ddev_targp);
for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {
@ -4141,7 +4141,7 @@ xfs_free_file_space(
error = 0;
if (len <= 0) /* if nothing being freed */
return error;
rt = (ip->i_d.di_flags & XFS_DIFLAG_REALTIME);
rt = XFS_IS_REALTIME_INODE(ip);
startoffset_fsb = XFS_B_TO_FSB(mp, offset);
end_dmi_offset = offset + len;
endoffset_fsb = XFS_B_TO_FSBT(mp, end_dmi_offset);