mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
38c26bfd90
Convert the xfs_sb_version_hasfoo() to checks against
mp->m_features. Checks of the superblock itself during disk
operations (e.g. in the read/write verifiers and the to/from disk
formatters) are not converted - they operate purely on the
superblock state. Everything else should use the mount features.
Large parts of this conversion were done with sed with commands like
this:
for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do
sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f
done
With manual cleanups for things like "xfs_has_extflgbit" and other
little inconsistencies in naming.
The result is ia lot less typing to check features and an XFS binary
size reduced by a bit over 3kB:
$ size -t fs/xfs/built-in.a
text data bss dec hex filenam
before 1130866 311352 484 1442702 16038e (TOTALS)
after 1127727 311352 484 1439563 15f74b (TOTALS)
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_shared.h"
|
|
#include "xfs_format.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans_resv.h"
|
|
#include "xfs_quota.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_inode.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_qm.h"
|
|
|
|
|
|
STATIC void
|
|
xfs_fill_statvfs_from_dquot(
|
|
struct kstatfs *statp,
|
|
struct xfs_dquot *dqp)
|
|
{
|
|
uint64_t limit;
|
|
|
|
limit = dqp->q_blk.softlimit ?
|
|
dqp->q_blk.softlimit :
|
|
dqp->q_blk.hardlimit;
|
|
if (limit && statp->f_blocks > limit) {
|
|
statp->f_blocks = limit;
|
|
statp->f_bfree = statp->f_bavail =
|
|
(statp->f_blocks > dqp->q_blk.reserved) ?
|
|
(statp->f_blocks - dqp->q_blk.reserved) : 0;
|
|
}
|
|
|
|
limit = dqp->q_ino.softlimit ?
|
|
dqp->q_ino.softlimit :
|
|
dqp->q_ino.hardlimit;
|
|
if (limit && statp->f_files > limit) {
|
|
statp->f_files = limit;
|
|
statp->f_ffree =
|
|
(statp->f_files > dqp->q_ino.reserved) ?
|
|
(statp->f_files - dqp->q_ino.reserved) : 0;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Directory tree accounting is implemented using project quotas, where
|
|
* the project identifier is inherited from parent directories.
|
|
* A statvfs (df, etc.) of a directory that is using project quota should
|
|
* return a statvfs of the project, not the entire filesystem.
|
|
* This makes such trees appear as if they are filesystems in themselves.
|
|
*/
|
|
void
|
|
xfs_qm_statvfs(
|
|
struct xfs_inode *ip,
|
|
struct kstatfs *statp)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct xfs_dquot *dqp;
|
|
|
|
if (!xfs_qm_dqget(mp, ip->i_projid, XFS_DQTYPE_PROJ, false, &dqp)) {
|
|
xfs_fill_statvfs_from_dquot(statp, dqp);
|
|
xfs_qm_dqput(dqp);
|
|
}
|
|
}
|
|
|
|
int
|
|
xfs_qm_newmount(
|
|
xfs_mount_t *mp,
|
|
uint *needquotamount,
|
|
uint *quotaflags)
|
|
{
|
|
uint quotaondisk;
|
|
uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
|
|
|
|
quotaondisk = xfs_has_quota(mp) &&
|
|
(mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
|
|
|
|
if (quotaondisk) {
|
|
uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
|
|
pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
|
|
gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
|
|
}
|
|
|
|
/*
|
|
* If the device itself is read-only, we can't allow
|
|
* the user to change the state of quota on the mount -
|
|
* this would generate a transaction on the ro device,
|
|
* which would lead to an I/O error and shutdown
|
|
*/
|
|
|
|
if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
|
|
(!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) ||
|
|
(gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
|
|
(!gquotaondisk && XFS_IS_GQUOTA_ON(mp)) ||
|
|
(pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
|
|
(!pquotaondisk && XFS_IS_PQUOTA_ON(mp))) &&
|
|
xfs_dev_is_read_only(mp, "changing quota state")) {
|
|
xfs_warn(mp, "please mount with%s%s%s%s.",
|
|
(!quotaondisk ? "out quota" : ""),
|
|
(uquotaondisk ? " usrquota" : ""),
|
|
(gquotaondisk ? " grpquota" : ""),
|
|
(pquotaondisk ? " prjquota" : ""));
|
|
return -EPERM;
|
|
}
|
|
|
|
if (XFS_IS_QUOTA_ON(mp) || quotaondisk) {
|
|
/*
|
|
* Call mount_quotas at this point only if we won't have to do
|
|
* a quotacheck.
|
|
*/
|
|
if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) {
|
|
/*
|
|
* If an error occurred, qm_mount_quotas code
|
|
* has already disabled quotas. So, just finish
|
|
* mounting, and get on with the boring life
|
|
* without disk quotas.
|
|
*/
|
|
xfs_qm_mount_quotas(mp);
|
|
} else {
|
|
/*
|
|
* Clear the quota flags, but remember them. This
|
|
* is so that the quota code doesn't get invoked
|
|
* before we're ready. This can happen when an
|
|
* inode goes inactive and wants to free blocks,
|
|
* or via xfs_log_mount_finish.
|
|
*/
|
|
*needquotamount = true;
|
|
*quotaflags = mp->m_qflags;
|
|
mp->m_qflags = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|