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[XFS] shrink mrlock_t 

The writer field is not needed for non_DEBU builds so remove it. While
we're at i also clean up the interface for is locked asserts to go through
and xfs_iget.c helper with an interface like the xfs_ilock routines to
isolated the XFS codebase from mrlock internals. That way we can kill
mrlock_t entirely once rw_semaphores grow an islocked facility. Also
remove unused flags to the ilock family of functions.

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30902a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Christoph Hellwig 2008-04-22 17:34:00 +10:00 committed by Lachlan McIlroy
parent eca450b7c2
commit 579aa9caf5
15 changed files with 155 additions and 176 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
fs/xfs/linux-2.6/mrlock.h
View File

@ -20,29 +20,24 @@
#include <linux/rwsem.h>
enum { MR_NONE, MR_ACCESS, MR_UPDATE };
typedef struct {
struct rw_semaphore mr_lock;
#ifdef DEBUG
int mr_writer;
#endif
} mrlock_t;
#ifdef DEBUG
#define mrinit(mrp, name) \
do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0)
#else
#define mrinit(mrp, name) \
do { init_rwsem(&(mrp)->mr_lock); } while (0)
#endif
#define mrlock_init(mrp, t,n,s) mrinit(mrp, n)
#define mrfree(mrp) do { } while (0)
static inline void mraccess(mrlock_t *mrp)
{
down_read(&mrp->mr_lock);
}
static inline void mrupdate(mrlock_t *mrp)
{
down_write(&mrp->mr_lock);
mrp->mr_writer = 1;
}
static inline void mraccess_nested(mrlock_t *mrp, int subclass)
{
down_read_nested(&mrp->mr_lock, subclass);
@ -51,10 +46,11 @@ static inline void mraccess_nested(mrlock_t *mrp, int subclass)
static inline void mrupdate_nested(mrlock_t *mrp, int subclass)
{
down_write_nested(&mrp->mr_lock, subclass);
#ifdef DEBUG
mrp->mr_writer = 1;
#endif
}
static inline int mrtryaccess(mrlock_t *mrp)
{
return down_read_trylock(&mrp->mr_lock);
@ -64,39 +60,31 @@ static inline int mrtryupdate(mrlock_t *mrp)
{
if (!down_write_trylock(&mrp->mr_lock))
return 0;
#ifdef DEBUG
mrp->mr_writer = 1;
#endif
return 1;
}
static inline void mrunlock(mrlock_t *mrp)
static inline void mrunlock_excl(mrlock_t *mrp)
{
if (mrp->mr_writer) {
mrp->mr_writer = 0;
up_write(&mrp->mr_lock);
} else {
up_read(&mrp->mr_lock);
}
#ifdef DEBUG
mrp->mr_writer = 0;
#endif
up_write(&mrp->mr_lock);
}
static inline void mrunlock_shared(mrlock_t *mrp)
{
up_read(&mrp->mr_lock);
}
static inline void mrdemote(mrlock_t *mrp)
{
#ifdef DEBUG
mrp->mr_writer = 0;
#endif
downgrade_write(&mrp->mr_lock);
}
#ifdef DEBUG
/*
* Debug-only routine, without some platform-specific asm code, we can
* now only answer requests regarding whether we hold the lock for write
* (reader state is outside our visibility, we only track writer state).
* Note: means !ismrlocked would give false positives, so don't do that.
*/
static inline int ismrlocked(mrlock_t *mrp, int type)
{
if (mrp && type == MR_UPDATE)
return mrp->mr_writer;
return 1;
}
#endif
#endif /* __XFS_SUPPORT_MRLOCK_H__ */

21
fs/xfs/linux-2.6/xfs_lrw.c
View File

@ -394,7 +394,7 @@ xfs_zero_last_block(
int error = 0;
xfs_bmbt_irec_t imap;
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
zero_offset = XFS_B_FSB_OFFSET(mp, isize);
if (zero_offset == 0) {
@ -425,14 +425,14 @@ xfs_zero_last_block(
* out sync. We need to drop the ilock while we do this so we
* don't deadlock when the buffer cache calls back to us.
*/
xfs_iunlock(ip, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
zero_len = mp->m_sb.sb_blocksize - zero_offset;
if (isize + zero_len > offset)
zero_len = offset - isize;
error = xfs_iozero(ip, isize, zero_len);
xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
xfs_ilock(ip, XFS_ILOCK_EXCL);
ASSERT(error >= 0);
return error;
}
@ -465,8 +465,7 @@ xfs_zero_eof(
int error = 0;
xfs_bmbt_irec_t imap;
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT(offset > isize);
/*
@ -475,8 +474,7 @@ xfs_zero_eof(
*/
error = xfs_zero_last_block(ip, offset, isize);
if (error) {
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
return error;
}
@ -507,8 +505,7 @@ xfs_zero_eof(
error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb,
0, NULL, 0, &imap, &nimaps, NULL, NULL);
if (error) {
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
return error;
}
ASSERT(nimaps > 0);
@ -532,7 +529,7 @@ xfs_zero_eof(
* Drop the inode lock while we're doing the I/O.
* We'll still have the iolock to protect us.
*/
xfs_iunlock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
zero_off = XFS_FSB_TO_B(mp, start_zero_fsb);
zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount);
@ -548,13 +545,13 @@ xfs_zero_eof(
start_zero_fsb = imap.br_startoff + imap.br_blockcount;
ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
xfs_ilock(ip, XFS_ILOCK_EXCL);
}
return 0;
out_lock:
xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
xfs_ilock(ip, XFS_ILOCK_EXCL);
ASSERT(error >= 0);
return error;
}

4
fs/xfs/quota/xfs_dquot.c
View File

@ -933,7 +933,7 @@ xfs_qm_dqget(
type == XFS_DQ_PROJ ||
type == XFS_DQ_GROUP);
if (ip) {
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (type == XFS_DQ_USER)
ASSERT(ip->i_udquot == NULL);
else
@ -1088,7 +1088,7 @@ xfs_qm_dqget(
xfs_qm_mplist_unlock(mp);
XFS_DQ_HASH_UNLOCK(h);
dqret:
ASSERT((ip == NULL) || XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL));
xfs_dqtrace_entry(dqp, "DQGET DONE");
*O_dqpp = dqp;
return (0);

21
fs/xfs/quota/xfs_qm.c
View File

@ -670,7 +670,7 @@ xfs_qm_dqattach_one(
xfs_dquot_t *dqp;
int error;
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
error = 0;
/*
* See if we already have it in the inode itself. IO_idqpp is
@ -874,7 +874,7 @@ xfs_qm_dqattach(
return 0;
ASSERT((flags & XFS_QMOPT_ILOCKED) == 0 ||
XFS_ISLOCKED_INODE_EXCL(ip));
xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (! (flags & XFS_QMOPT_ILOCKED))
xfs_ilock(ip, XFS_ILOCK_EXCL);
@ -888,7 +888,8 @@ xfs_qm_dqattach(
goto done;
nquotas++;
}
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (XFS_IS_OQUOTA_ON(mp)) {
error = XFS_IS_GQUOTA_ON(mp) ?
xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
@ -913,7 +914,7 @@ xfs_qm_dqattach(
* This WON'T, in general, result in a thrash.
*/
if (nquotas == 2) {
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(ip->i_udquot);
ASSERT(ip->i_gdquot);
@ -956,7 +957,7 @@ xfs_qm_dqattach(
#ifdef QUOTADEBUG
else
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
#endif
return error;
}
@ -1291,7 +1292,7 @@ xfs_qm_dqget_noattach(
xfs_mount_t *mp;
xfs_dquot_t *udqp, *gdqp;
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
mp = ip->i_mount;
udqp = NULL;
gdqp = NULL;
@ -1392,7 +1393,7 @@ xfs_qm_qino_alloc(
* Keep an extra reference to this quota inode. This inode is
* locked exclusively and joined to the transaction already.
*/
ASSERT(XFS_ISLOCKED_INODE_EXCL(*ip));
ASSERT(xfs_isilocked(*ip, XFS_ILOCK_EXCL));
VN_HOLD(XFS_ITOV((*ip)));
/*
@ -2557,7 +2558,7 @@ xfs_qm_vop_chown(
uint bfield = XFS_IS_REALTIME_INODE(ip) ?
XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
/* old dquot */
@ -2601,7 +2602,7 @@ xfs_qm_vop_chown_reserve(
uint delblks, blkflags, prjflags = 0;
xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq;
ASSERT(XFS_ISLOCKED_INODE(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
mp = ip->i_mount;
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
@ -2711,7 +2712,7 @@ xfs_qm_vop_dqattach_and_dqmod_newinode(
if (!XFS_IS_QUOTA_ON(tp->t_mountp))
return;
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp));
if (udqp) {

5
fs/xfs/quota/xfs_quota_priv.h
View File

@ -27,11 +27,6 @@
/* Number of dquots that fit in to a dquot block */
#define XFS_QM_DQPERBLK(mp) ((mp)->m_quotainfo->qi_dqperchunk)
#define XFS_ISLOCKED_INODE(ip) (ismrlocked(&(ip)->i_lock, \
MR_UPDATE | MR_ACCESS) != 0)
#define XFS_ISLOCKED_INODE_EXCL(ip) (ismrlocked(&(ip)->i_lock, \
MR_UPDATE) != 0)
#define XFS_DQ_IS_ADDEDTO_TRX(t, d) ((d)->q_transp == (t))
#define XFS_QI_MPLRECLAIMS(mp) ((mp)->m_quotainfo->qi_dqreclaims)

2
fs/xfs/quota/xfs_trans_dquot.c
View File

@ -834,7 +834,7 @@ xfs_trans_reserve_quota_nblks(
ASSERT(ip->i_ino != mp->m_sb.sb_uquotino);
ASSERT(ip->i_ino != mp->m_sb.sb_gquotino);
ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
XFS_TRANS_DQ_RES_RTBLKS ||

1
fs/xfs/xfs_bmap.c
View File

@ -4074,7 +4074,6 @@ xfs_bmap_add_attrfork(
error2:
xfs_bmap_cancel(&flist);
error1:
ASSERT(ismrlocked(&ip->i_lock,MR_UPDATE));
xfs_iunlock(ip, XFS_ILOCK_EXCL);
error0:
xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);

142
fs/xfs/xfs_iget.c
View File

@ -593,8 +593,9 @@ xfs_iunlock_map_shared(
* XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL
*/
void
xfs_ilock(xfs_inode_t *ip,
uint lock_flags)
xfs_ilock(
xfs_inode_t *ip,
uint lock_flags)
{
/*
* You can't set both SHARED and EXCL for the same lock,
@ -607,16 +608,16 @@ xfs_ilock(xfs_inode_t *ip,
(XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
ASSERT((lock_flags & ~(XFS_LOCK_MASK | XFS_LOCK_DEP_MASK)) == 0);
if (lock_flags & XFS_IOLOCK_EXCL) {
if (lock_flags & XFS_IOLOCK_EXCL)
mrupdate_nested(&ip->i_iolock, XFS_IOLOCK_DEP(lock_flags));
} else if (lock_flags & XFS_IOLOCK_SHARED) {
else if (lock_flags & XFS_IOLOCK_SHARED)
mraccess_nested(&ip->i_iolock, XFS_IOLOCK_DEP(lock_flags));
}
if (lock_flags & XFS_ILOCK_EXCL) {
if (lock_flags & XFS_ILOCK_EXCL)
mrupdate_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
} else if (lock_flags & XFS_ILOCK_SHARED) {
else if (lock_flags & XFS_ILOCK_SHARED)
mraccess_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
}
xfs_ilock_trace(ip, 1, lock_flags, (inst_t *)__return_address);
}
@ -631,15 +632,12 @@ xfs_ilock(xfs_inode_t *ip,
* lock_flags -- this parameter indicates the inode's locks to be
* to be locked. See the comment for xfs_ilock() for a list
* of valid values.
*
*/
int
xfs_ilock_nowait(xfs_inode_t *ip,
uint lock_flags)
xfs_ilock_nowait(
xfs_inode_t *ip,
uint lock_flags)
{
int iolocked;
int ilocked;
/*
* You can't set both SHARED and EXCL for the same lock,
* and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_ILOCK_SHARED,
@ -651,37 +649,30 @@ xfs_ilock_nowait(xfs_inode_t *ip,
(XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
ASSERT((lock_flags & ~(XFS_LOCK_MASK | XFS_LOCK_DEP_MASK)) == 0);
iolocked = 0;
if (lock_flags & XFS_IOLOCK_EXCL) {
iolocked = mrtryupdate(&ip->i_iolock);
if (!iolocked) {
return 0;
}
if (!mrtryupdate(&ip->i_iolock))
goto out;
} else if (lock_flags & XFS_IOLOCK_SHARED) {
iolocked = mrtryaccess(&ip->i_iolock);
if (!iolocked) {
return 0;
}
if (!mrtryaccess(&ip->i_iolock))
goto out;
}
if (lock_flags & XFS_ILOCK_EXCL) {
ilocked = mrtryupdate(&ip->i_lock);
if (!ilocked) {
if (iolocked) {
mrunlock(&ip->i_iolock);
}
return 0;
}
if (!mrtryupdate(&ip->i_lock))
goto out_undo_iolock;
} else if (lock_flags & XFS_ILOCK_SHARED) {
ilocked = mrtryaccess(&ip->i_lock);
if (!ilocked) {
if (iolocked) {
mrunlock(&ip->i_iolock);
}
return 0;
}
if (!mrtryaccess(&ip->i_lock))
goto out_undo_iolock;
}
xfs_ilock_trace(ip, 2, lock_flags, (inst_t *)__return_address);
return 1;
out_undo_iolock:
if (lock_flags & XFS_IOLOCK_EXCL)
mrunlock_excl(&ip->i_iolock);
else if (lock_flags & XFS_IOLOCK_SHARED)
mrunlock_shared(&ip->i_iolock);
out:
return 0;
}
/*
@ -697,8 +688,9 @@ xfs_ilock_nowait(xfs_inode_t *ip,
*
*/
void
xfs_iunlock(xfs_inode_t *ip,
uint lock_flags)
xfs_iunlock(
xfs_inode_t *ip,
uint lock_flags)
{
/*
* You can't set both SHARED and EXCL for the same lock,
@ -713,31 +705,25 @@ xfs_iunlock(xfs_inode_t *ip,
XFS_LOCK_DEP_MASK)) == 0);
ASSERT(lock_flags != 0);
if (lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) {
ASSERT(!(lock_flags & XFS_IOLOCK_SHARED) ||
(ismrlocked(&ip->i_iolock, MR_ACCESS)));
ASSERT(!(lock_flags & XFS_IOLOCK_EXCL) ||
(ismrlocked(&ip->i_iolock, MR_UPDATE)));
mrunlock(&ip->i_iolock);
}
if (lock_flags & XFS_IOLOCK_EXCL)
mrunlock_excl(&ip->i_iolock);
else if (lock_flags & XFS_IOLOCK_SHARED)
mrunlock_shared(&ip->i_iolock);
if (lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) {
ASSERT(!(lock_flags & XFS_ILOCK_SHARED) ||
(ismrlocked(&ip->i_lock, MR_ACCESS)));
ASSERT(!(lock_flags & XFS_ILOCK_EXCL) ||
(ismrlocked(&ip->i_lock, MR_UPDATE)));
mrunlock(&ip->i_lock);
if (lock_flags & XFS_ILOCK_EXCL)
mrunlock_excl(&ip->i_lock);
else if (lock_flags & XFS_ILOCK_SHARED)
mrunlock_shared(&ip->i_lock);
if ((lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) &&
!(lock_flags & XFS_IUNLOCK_NONOTIFY) && ip->i_itemp) {
/*
* Let the AIL know that this item has been unlocked in case
* it is in the AIL and anyone is waiting on it. Don't do
* this if the caller has asked us not to.
*/
if (!(lock_flags & XFS_IUNLOCK_NONOTIFY) &&
ip->i_itemp != NULL) {
xfs_trans_unlocked_item(ip->i_mount,
(xfs_log_item_t*)(ip->i_itemp));
}
xfs_trans_unlocked_item(ip->i_mount,
(xfs_log_item_t*)(ip->i_itemp));
}
xfs_ilock_trace(ip, 3, lock_flags, (inst_t *)__return_address);
}
@ -747,22 +733,48 @@ xfs_iunlock(xfs_inode_t *ip,
* if it is being demoted.
*/
void
xfs_ilock_demote(xfs_inode_t *ip,
uint lock_flags)
xfs_ilock_demote(
xfs_inode_t *ip,
uint lock_flags)
{
ASSERT(lock_flags & (XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL));
ASSERT((lock_flags & ~(XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL)) == 0);
if (lock_flags & XFS_ILOCK_EXCL) {
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
if (lock_flags & XFS_ILOCK_EXCL)
mrdemote(&ip->i_lock);
}
if (lock_flags & XFS_IOLOCK_EXCL) {
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
if (lock_flags & XFS_IOLOCK_EXCL)
mrdemote(&ip->i_iolock);
}
}
#ifdef DEBUG
/*
* Debug-only routine, without additional rw_semaphore APIs, we can
* now only answer requests regarding whether we hold the lock for write
* (reader state is outside our visibility, we only track writer state).
*
* Note: this means !xfs_isilocked would give false positives, so don't do that.
*/
int
xfs_isilocked(
xfs_inode_t *ip,
uint lock_flags)
{
if ((lock_flags & (XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)) ==
XFS_ILOCK_EXCL) {
if (!ip->i_lock.mr_writer)
return 0;
}
if ((lock_flags & (XFS_IOLOCK_EXCL|XFS_IOLOCK_SHARED)) ==
XFS_IOLOCK_EXCL) {
if (!ip->i_iolock.mr_writer)
return 0;
}
return 1;
}
#endif
/*
* The following three routines simply manage the i_flock
* semaphore embedded in the inode. This semaphore synchronizes

25
fs/xfs/xfs_inode.c
View File

@ -1291,7 +1291,7 @@ xfs_file_last_byte(
xfs_fileoff_t size_last_block;
int error;
ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE | MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL|XFS_IOLOCK_SHARED));
mp = ip->i_mount;
/*
@ -1402,7 +1402,7 @@ xfs_itruncate_start(
bhv_vnode_t *vp;
int error = 0;
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT((new_size == 0) || (new_size <= ip->i_size));
ASSERT((flags == XFS_ITRUNC_DEFINITE) ||
(flags == XFS_ITRUNC_MAYBE));
@ -1528,8 +1528,7 @@ xfs_itruncate_finish(
xfs_bmap_free_t free_list;
int error;
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE) != 0);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT((new_size == 0) || (new_size <= ip->i_size));
ASSERT(*tp != NULL);
ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
@ -1780,8 +1779,7 @@ xfs_igrow_start(
xfs_fsize_t new_size,
cred_t *credp)
{
ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0);
ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT(new_size > ip->i_size);
/*
@ -1809,8 +1807,7 @@ xfs_igrow_finish(
xfs_fsize_t new_size,
int change_flag)
{
ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0);
ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT(ip->i_transp == tp);
ASSERT(new_size > ip->i_size);
@ -2287,7 +2284,7 @@ xfs_ifree(
xfs_dinode_t *dip;
xfs_buf_t *ibp;
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(ip->i_transp == tp);
ASSERT(ip->i_d.di_nlink == 0);
ASSERT(ip->i_d.di_nextents == 0);
@ -2746,7 +2743,7 @@ void
xfs_ipin(
xfs_inode_t *ip)
{
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
atomic_inc(&ip->i_pincount);
}
@ -2779,7 +2776,7 @@ __xfs_iunpin_wait(
{
xfs_inode_log_item_t *iip = ip->i_itemp;
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE | MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
if (atomic_read(&ip->i_pincount) == 0)
return;
@ -2829,7 +2826,7 @@ xfs_iextents_copy(
xfs_fsblock_t start_block;
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
ASSERT(ifp->if_bytes > 0);
nrecs = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
@ -3132,7 +3129,7 @@ xfs_iflush(
XFS_STATS_INC(xs_iflush_count);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
ASSERT(issemalocked(&(ip->i_flock)));
ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
ip->i_d.di_nextents > ip->i_df.if_ext_max);
@ -3297,7 +3294,7 @@ xfs_iflush_int(
int first;
#endif
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
ASSERT(issemalocked(&(ip->i_flock)));
ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
ip->i_d.di_nextents > ip->i_df.if_ext_max);

14
fs/xfs/xfs_inode.h
View File

@ -386,20 +386,9 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
#define XFS_ILOCK_EXCL (1<<2)
#define XFS_ILOCK_SHARED (1<<3)
#define XFS_IUNLOCK_NONOTIFY (1<<4)
/* #define XFS_IOLOCK_NESTED (1<<5) */
#define XFS_EXTENT_TOKEN_RD (1<<6)
#define XFS_SIZE_TOKEN_RD (1<<7)
#define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD)
#define XFS_WILLLEND (1<<8) /* Always acquire tokens for lending */
#define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND)
#define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND)
#define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND)
/* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */
#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
| XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \
| XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD \
| XFS_WILLLEND)
| XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
/*
* Flags for lockdep annotations.
@ -483,6 +472,7 @@ void xfs_ilock(xfs_inode_t *, uint);
int xfs_ilock_nowait(xfs_inode_t *, uint);
void xfs_iunlock(xfs_inode_t *, uint);
void xfs_ilock_demote(xfs_inode_t *, uint);
int xfs_isilocked(xfs_inode_t *, uint);
void xfs_iflock(xfs_inode_t *);
int xfs_iflock_nowait(xfs_inode_t *);
uint xfs_ilock_map_shared(xfs_inode_t *);

12
fs/xfs/xfs_inode_item.c
View File

@ -547,7 +547,7 @@ STATIC void
xfs_inode_item_pin(
xfs_inode_log_item_t *iip)
{
ASSERT(ismrlocked(&(iip->ili_inode->i_lock), MR_UPDATE));
ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
xfs_ipin(iip->ili_inode);
}
@ -664,13 +664,13 @@ xfs_inode_item_unlock(
ASSERT(iip != NULL);
ASSERT(iip->ili_inode->i_itemp != NULL);
ASSERT(ismrlocked(&(iip->ili_inode->i_lock), MR_UPDATE));
ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
ASSERT((!(iip->ili_inode->i_itemp->ili_flags &
XFS_ILI_IOLOCKED_EXCL)) ||
ismrlocked(&(iip->ili_inode->i_iolock), MR_UPDATE));
xfs_isilocked(iip->ili_inode, XFS_IOLOCK_EXCL));
ASSERT((!(iip->ili_inode->i_itemp->ili_flags &
XFS_ILI_IOLOCKED_SHARED)) ||
ismrlocked(&(iip->ili_inode->i_iolock), MR_ACCESS));
xfs_isilocked(iip->ili_inode, XFS_IOLOCK_SHARED));
/*
* Clear the transaction pointer in the inode.
*/
@ -769,7 +769,7 @@ xfs_inode_item_pushbuf(
ip = iip->ili_inode;
ASSERT(ismrlocked(&(ip->i_lock), MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
/*
* The ili_pushbuf_flag keeps others from
@ -857,7 +857,7 @@ xfs_inode_item_push(
ip = iip->ili_inode;
ASSERT(ismrlocked(&(ip->i_lock), MR_ACCESS));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
ASSERT(issemalocked(&(ip->i_flock)));
/*
* Since we were able to lock the inode's flush lock and

6
fs/xfs/xfs_iomap.c
View File

@ -196,14 +196,14 @@ xfs_iomap(
break;
case BMAPI_WRITE:
xfs_iomap_enter_trace(XFS_IOMAP_WRITE_ENTER, ip, offset, count);
lockmode = XFS_ILOCK_EXCL|XFS_EXTSIZE_WR;
lockmode = XFS_ILOCK_EXCL;
if (flags & BMAPI_IGNSTATE)
bmapi_flags |= XFS_BMAPI_IGSTATE|XFS_BMAPI_ENTIRE;
xfs_ilock(ip, lockmode);
break;
case BMAPI_ALLOCATE:
xfs_iomap_enter_trace(XFS_IOMAP_ALLOC_ENTER, ip, offset, count);
lockmode = XFS_ILOCK_SHARED|XFS_EXTSIZE_RD;
lockmode = XFS_ILOCK_SHARED;
bmapi_flags = XFS_BMAPI_ENTIRE;
/* Attempt non-blocking lock */
@ -624,7 +624,7 @@ xfs_iomap_write_delay(
int prealloc, fsynced = 0;
int error;
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
/*
* Make sure that the dquots are there. This doesn't hold

12
fs/xfs/xfs_trans_inode.c
View File

@ -111,13 +111,13 @@ xfs_trans_iget(
*/
ASSERT(ip->i_itemp != NULL);
ASSERT(lock_flags & XFS_ILOCK_EXCL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT((!(lock_flags & XFS_IOLOCK_EXCL)) ||
ismrlocked(&ip->i_iolock, MR_UPDATE));
xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT((!(lock_flags & XFS_IOLOCK_EXCL)) ||
(ip->i_itemp->ili_flags & XFS_ILI_IOLOCKED_EXCL));
ASSERT((!(lock_flags & XFS_IOLOCK_SHARED)) ||
ismrlocked(&ip->i_iolock, (MR_UPDATE | MR_ACCESS)));
xfs_isilocked(ip, XFS_IOLOCK_EXCL|XFS_IOLOCK_SHARED));
ASSERT((!(lock_flags & XFS_IOLOCK_SHARED)) ||
(ip->i_itemp->ili_flags & XFS_ILI_IOLOCKED_ANY));
@ -185,7 +185,7 @@ xfs_trans_ijoin(
xfs_inode_log_item_t *iip;
ASSERT(ip->i_transp == NULL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(lock_flags & XFS_ILOCK_EXCL);
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
@ -232,7 +232,7 @@ xfs_trans_ihold(
{
ASSERT(ip->i_transp == tp);
ASSERT(ip->i_itemp != NULL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ip->i_itemp->ili_flags |= XFS_ILI_HOLD;
}
@ -257,7 +257,7 @@ xfs_trans_log_inode(
ASSERT(ip->i_transp == tp);
ASSERT(ip->i_itemp != NULL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)(ip->i_itemp));
ASSERT(lidp != NULL);

2
fs/xfs/xfs_utils.c
View File

@ -310,7 +310,7 @@ xfs_bump_ino_vers2(
{
xfs_mount_t *mp;
ASSERT(ismrlocked (&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(ip->i_d.di_version == XFS_DINODE_VERSION_1);
ip->i_d.di_version = XFS_DINODE_VERSION_2;

4
fs/xfs/xfs_vnodeops.c
View File

@ -1305,7 +1305,7 @@ xfs_inactive_attrs(
int error;
xfs_mount_t *mp;
ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
tp = *tpp;
mp = ip->i_mount;
ASSERT(ip->i_d.di_forkoff != 0);
@ -1776,7 +1776,7 @@ xfs_create(
* It is locked (and joined to the transaction).
*/
ASSERT(ismrlocked (&ip->i_lock, MR_UPDATE));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
/*
* Now we join the directory inode to the transaction. We do not do it