From abc1064742604e60a47a65fa3214dc1a84db093d Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 8 Jun 2009 15:35:12 +0200 Subject: xfs: remove unused parameter from xfs_reclaim_inodes The noblock parameter of xfs_reclaim_inodes is only ever set to zero. Remove it and all the conditional code that is never executed. Signed-off-by: Dave Chinner Signed-off-by: Christoph Hellwig Reviewed-by: Eric Sandeen --- fs/xfs/linux-2.6/xfs_sync.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/linux-2.6/xfs_sync.h') diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index 308d5bf6dfbd..d7b2b5f1c387 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -48,7 +48,7 @@ void xfs_quiesce_attr(struct xfs_mount *mp); void xfs_flush_inodes(struct xfs_inode *ip); int xfs_reclaim_inode(struct xfs_inode *ip, int locked, int sync_mode); -int xfs_reclaim_inodes(struct xfs_mount *mp, int noblock, int mode); +int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip); -- cgit v1.2.3 From fe588ed32867b42e0d906db558ca92fd9f8b128e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Jun 2009 15:35:27 +0200 Subject: xfs: use generic inode iterator in xfs_qm_dqrele_all_inodes Use xfs_inode_ag_iterator instead of opencoding the inode walk in the quota code. Mark xfs_inode_ag_iterator and xfs_sync_inode_valid non-static to allow using them from the quota code. Signed-off-by: Christoph Hellwig Reviewed-by: Josef 'Jeff' Sipek Reviewed-by: Eric Sandeen --- fs/xfs/linux-2.6/xfs_sync.c | 4 +- fs/xfs/linux-2.6/xfs_sync.h | 6 +++ fs/xfs/quota/xfs_qm_syscalls.c | 112 ++++++++++++----------------------------- 3 files changed, 39 insertions(+), 83 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_sync.h') diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index 9798643feb3b..a3d2e7713068 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -141,7 +141,7 @@ restart: return last_error; } -STATIC int +int xfs_inode_ag_iterator( struct xfs_mount *mp, int (*execute)(struct xfs_inode *ip, @@ -167,7 +167,7 @@ xfs_inode_ag_iterator( } /* must be called with pag_ici_lock held and releases it */ -STATIC int +int xfs_sync_inode_valid( struct xfs_inode *ip, struct xfs_perag *pag) diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index d7b2b5f1c387..9bb1253a4023 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -54,4 +54,10 @@ void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip); void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag, struct xfs_inode *ip); + +int xfs_sync_inode_valid(struct xfs_inode *ip, struct xfs_perag *pag); +int xfs_inode_ag_iterator(struct xfs_mount *mp, + int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), + int flags, int tag); + #endif diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c index c7b66f6506ce..7126f855e14b 100644 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ b/fs/xfs/quota/xfs_qm_syscalls.c @@ -847,105 +847,55 @@ xfs_qm_export_flags( } -/* - * Release all the dquots on the inodes in an AG. - */ -STATIC void -xfs_qm_dqrele_inodes_ag( - xfs_mount_t *mp, - int ag, - uint flags) +STATIC int +xfs_dqrele_inode( + struct xfs_inode *ip, + struct xfs_perag *pag, + int flags) { - xfs_inode_t *ip = NULL; - xfs_perag_t *pag = &mp->m_perag[ag]; - int first_index = 0; - int nr_found; - - do { - /* - * use a gang lookup to find the next inode in the tree - * as the tree is sparse and a gang lookup walks to find - * the number of objects requested. - */ - read_lock(&pag->pag_ici_lock); - nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, - (void**)&ip, first_index, 1); - - if (!nr_found) { - read_unlock(&pag->pag_ici_lock); - break; - } - - /* - * Update the index for the next lookup. Catch overflows - * into the next AG range which can occur if we have inodes - * in the last block of the AG and we are currently - * pointing to the last inode. - */ - first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); - if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) { - read_unlock(&pag->pag_ici_lock); - break; - } - - /* skip quota inodes */ - if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) { - ASSERT(ip->i_udquot == NULL); - ASSERT(ip->i_gdquot == NULL); - read_unlock(&pag->pag_ici_lock); - continue; - } + int error; - /* - * If we can't get a reference on the inode, it must be - * in reclaim. Leave it for the reclaim code to flush. - */ - if (!igrab(VFS_I(ip))) { - read_unlock(&pag->pag_ici_lock); - continue; - } + /* skip quota inodes */ + if (ip == XFS_QI_UQIP(ip->i_mount) || ip == XFS_QI_GQIP(ip->i_mount)) { + ASSERT(ip->i_udquot == NULL); + ASSERT(ip->i_gdquot == NULL); read_unlock(&pag->pag_ici_lock); + return 0; + } - /* avoid new inodes though we shouldn't find any here */ - if (xfs_iflags_test(ip, XFS_INEW)) { - IRELE(ip); - continue; - } + error = xfs_sync_inode_valid(ip, pag); + if (error) + return error; - xfs_ilock(ip, XFS_ILOCK_EXCL); - if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { - xfs_qm_dqrele(ip->i_udquot); - ip->i_udquot = NULL; - } - if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && - ip->i_gdquot) { - xfs_qm_dqrele(ip->i_gdquot); - ip->i_gdquot = NULL; - } - xfs_iput(ip, XFS_ILOCK_EXCL); + xfs_ilock(ip, XFS_ILOCK_EXCL); + if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { + xfs_qm_dqrele(ip->i_udquot); + ip->i_udquot = NULL; + } + if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { + xfs_qm_dqrele(ip->i_gdquot); + ip->i_gdquot = NULL; + } + xfs_iput(ip, XFS_ILOCK_EXCL); + IRELE(ip); - } while (nr_found); + return 0; } + /* * Go thru all the inodes in the file system, releasing their dquots. + * * Note that the mount structure gets modified to indicate that quotas are off - * AFTER this, in the case of quotaoff. This also gets called from - * xfs_rootumount. + * AFTER this, in the case of quotaoff. */ void xfs_qm_dqrele_all_inodes( struct xfs_mount *mp, uint flags) { - int i; - ASSERT(mp->m_quotainfo); - for (i = 0; i < mp->m_sb.sb_agcount; i++) { - if (!mp->m_perag[i].pag_ici_init) - continue; - xfs_qm_dqrele_inodes_ag(mp, i, flags); - } + xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, XFS_ICI_NO_TAG); } /*------------------------------------------------------------------------*/ -- cgit v1.2.3 From 075fe1028699f6a280545dfc2cfc5ac82d555c8c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Jun 2009 15:35:48 +0200 Subject: xfs: split xfs_sync_inodes xfs_sync_inodes is used to write back either file data or inode metadata. In general we always do these separately, except for one fishy case in xfs_fs_put_super that does both. So separate xfs_sync_inodes into separate xfs_sync_data and xfs_sync_attr functions. In xfs_fs_put_super we first call the data sync and then the attr sync as that was the previous order. The moved log force in that path doesn't make a difference because we will force the log again as part of the real unmount process. The filesystem readonly checks are not performed by the new function but instead moved into the callers, given that most callers alredy have it further up in the stack. Also add debug checks that we do not pass in incorrect flags in the new xfs_sync_data and xfs_sync_attr function and fix the one place that did pass in a wrong flag. Also remove a comment mentioning xfs_sync_inodes that has been incorrect for a while because we always take either the iolock or ilock in the sync path these days. Signed-off-by: Christoph Hellwig Reviewed-by: Eric Sandeen --- fs/xfs/linux-2.6/xfs_quotaops.c | 4 ++- fs/xfs/linux-2.6/xfs_super.c | 13 +++++++++- fs/xfs/linux-2.6/xfs_sync.c | 55 +++++++++++++++++++++++++---------------- fs/xfs/linux-2.6/xfs_sync.h | 5 ++-- fs/xfs/xfs_filestream.c | 6 ++--- 5 files changed, 53 insertions(+), 30 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_sync.h') diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/linux-2.6/xfs_quotaops.c index 94d9a633d3d9..cb6e2cca214f 100644 --- a/fs/xfs/linux-2.6/xfs_quotaops.c +++ b/fs/xfs/linux-2.6/xfs_quotaops.c @@ -50,9 +50,11 @@ xfs_fs_quota_sync( { struct xfs_mount *mp = XFS_M(sb); + if (sb->s_flags & MS_RDONLY) + return -EROFS; if (!XFS_IS_QUOTA_RUNNING(mp)) return -ENOSYS; - return -xfs_sync_inodes(mp, SYNC_DELWRI); + return -xfs_sync_data(mp, 0); } STATIC int diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 0d9b64b219e0..d4e7ef8f8df9 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -1071,7 +1071,18 @@ xfs_fs_put_super( int unmount_event_flags = 0; xfs_syncd_stop(mp); - xfs_sync_inodes(mp, SYNC_ATTR|SYNC_DELWRI); + + if (!(sb->s_flags & MS_RDONLY)) { + /* + * XXX(hch): this should be SYNC_WAIT. + * + * Or more likely not needed at all because the VFS is already + * calling ->sync_fs after shutting down all filestem + * operations and just before calling ->put_super. + */ + xfs_sync_data(mp, 0); + xfs_sync_attr(mp, 0); + } #ifdef HAVE_DMAPI if (mp->m_flags & XFS_MOUNT_DMAPI) { diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index a3d2e7713068..c1a9a1135073 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -268,29 +268,42 @@ xfs_sync_inode_attr( return error; } +/* + * Write out pagecache data for the whole filesystem. + */ int -xfs_sync_inodes( - xfs_mount_t *mp, - int flags) +xfs_sync_data( + struct xfs_mount *mp, + int flags) { - int error = 0; - int lflags = XFS_LOG_FORCE; + int error; - if (mp->m_flags & XFS_MOUNT_RDONLY) - return 0; + ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT|SYNC_IOWAIT)) == 0); - if (flags & SYNC_WAIT) - lflags |= XFS_LOG_SYNC; + error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags, + XFS_ICI_NO_TAG); + if (error) + return XFS_ERROR(error); - if (flags & SYNC_DELWRI) - error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags, XFS_ICI_NO_TAG); + xfs_log_force(mp, 0, + (flags & SYNC_WAIT) ? + XFS_LOG_FORCE | XFS_LOG_SYNC : + XFS_LOG_FORCE); + return 0; +} - if (flags & SYNC_ATTR) - error = xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags, XFS_ICI_NO_TAG); +/* + * Write out inode metadata (attributes) for the whole filesystem. + */ +int +xfs_sync_attr( + struct xfs_mount *mp, + int flags) +{ + ASSERT((flags & ~SYNC_WAIT) == 0); - if (!error && (flags & SYNC_DELWRI)) - xfs_log_force(mp, 0, lflags); - return XFS_ERROR(error); + return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags, + XFS_ICI_NO_TAG); } STATIC int @@ -404,12 +417,12 @@ xfs_quiesce_data( int error; /* push non-blocking */ - xfs_sync_inodes(mp, SYNC_DELWRI|SYNC_BDFLUSH); + xfs_sync_data(mp, 0); xfs_qm_sync(mp, SYNC_BDFLUSH); xfs_filestream_flush(mp); /* push and block */ - xfs_sync_inodes(mp, SYNC_DELWRI|SYNC_WAIT|SYNC_IOWAIT); + xfs_sync_data(mp, SYNC_WAIT|SYNC_IOWAIT); xfs_qm_sync(mp, SYNC_WAIT); /* write superblock and hoover up shutdown errors */ @@ -438,7 +451,7 @@ xfs_quiesce_fs( * logged before we can write the unmount record. */ do { - xfs_sync_inodes(mp, SYNC_ATTR|SYNC_WAIT); + xfs_sync_attr(mp, SYNC_WAIT); pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); if (!pincount) { delay(50); @@ -521,8 +534,8 @@ xfs_flush_inodes_work( void *arg) { struct inode *inode = arg; - xfs_sync_inodes(mp, SYNC_DELWRI | SYNC_TRYLOCK); - xfs_sync_inodes(mp, SYNC_DELWRI | SYNC_TRYLOCK | SYNC_IOWAIT); + xfs_sync_data(mp, SYNC_TRYLOCK); + xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_IOWAIT); iput(inode); } diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index 9bb1253a4023..26bfb5c42e76 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -29,8 +29,6 @@ typedef struct xfs_sync_work { struct completion *w_completion; } xfs_sync_work_t; -#define SYNC_ATTR 0x0001 /* sync attributes */ -#define SYNC_DELWRI 0x0002 /* look at delayed writes */ #define SYNC_WAIT 0x0004 /* wait for i/o to complete */ #define SYNC_BDFLUSH 0x0008 /* BDFLUSH is calling -- don't block */ #define SYNC_IOWAIT 0x0010 /* wait for all I/O to complete */ @@ -39,7 +37,8 @@ typedef struct xfs_sync_work { int xfs_syncd_init(struct xfs_mount *mp); void xfs_syncd_stop(struct xfs_mount *mp); -int xfs_sync_inodes(struct xfs_mount *mp, int flags); +int xfs_sync_attr(struct xfs_mount *mp, int flags); +int xfs_sync_data(struct xfs_mount *mp, int flags); int xfs_sync_fsdata(struct xfs_mount *mp, int flags); int xfs_quiesce_data(struct xfs_mount *mp); diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 6c87c8f304ef..edf8bdf4141f 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -542,10 +542,8 @@ xfs_filestream_associate( * waiting for the lock because someone else is waiting on the lock we * hold and we cannot drop that as we are in a transaction here. * - * Lucky for us, this inversion is rarely a problem because it's a - * directory inode that we are trying to lock here and that means the - * only place that matters is xfs_sync_inodes() and SYNC_DELWRI is - * used. i.e. freeze, remount-ro, quotasync or unmount. + * Lucky for us, this inversion is not a problem because it's a + * directory inode that we are trying to lock here. * * So, if we can't get the iolock without sleeping then just give up */ -- cgit v1.2.3 From b0710ccc6d9fa8fb908b5f6d1b0782a09d80e24f Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Jun 2009 15:37:11 +0200 Subject: xfs: remove SYNC_IOWAIT We want to wait for all I/O to finish when we do data integrity syncs. So there is no reason to keep SYNC_WAIT separate from SYNC_IOWAIT. This causes a little change in behaviour for the ENOSPC flushing code which now does a second submission and wait of buffered I/O, but that should finish ASAP as we already did an asynchronous writeout earlier. Signed-off-by: Christoph Hellwig Reviewed-by: Josef 'Jeff' Sipek Reviewed-by: Eric Sandeen --- fs/xfs/linux-2.6/xfs_sync.c | 8 ++++---- fs/xfs/linux-2.6/xfs_sync.h | 1 - 2 files changed, 4 insertions(+), 5 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_sync.h') diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index c1a9a1135073..32abd96b1095 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -227,7 +227,7 @@ xfs_sync_inode_data( xfs_iunlock(ip, XFS_IOLOCK_SHARED); out_wait: - if (flags & SYNC_IOWAIT) + if (flags & SYNC_WAIT) xfs_ioend_wait(ip); IRELE(ip); return error; @@ -278,7 +278,7 @@ xfs_sync_data( { int error; - ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT|SYNC_IOWAIT)) == 0); + ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0); error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags, XFS_ICI_NO_TAG); @@ -422,7 +422,7 @@ xfs_quiesce_data( xfs_filestream_flush(mp); /* push and block */ - xfs_sync_data(mp, SYNC_WAIT|SYNC_IOWAIT); + xfs_sync_data(mp, SYNC_WAIT); xfs_qm_sync(mp, SYNC_WAIT); /* write superblock and hoover up shutdown errors */ @@ -535,7 +535,7 @@ xfs_flush_inodes_work( { struct inode *inode = arg; xfs_sync_data(mp, SYNC_TRYLOCK); - xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_IOWAIT); + xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_WAIT); iput(inode); } diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index 26bfb5c42e76..bda33a03e12b 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -31,7 +31,6 @@ typedef struct xfs_sync_work { #define SYNC_WAIT 0x0004 /* wait for i/o to complete */ #define SYNC_BDFLUSH 0x0008 /* BDFLUSH is calling -- don't block */ -#define SYNC_IOWAIT 0x0010 /* wait for all I/O to complete */ #define SYNC_TRYLOCK 0x0020 /* only try to lock inodes */ int xfs_syncd_init(struct xfs_mount *mp); -- cgit v1.2.3 From 8b5403a6d772d340541cfb30a668fde119c40ac1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Jun 2009 15:37:16 +0200 Subject: xfs: remove SYNC_BDFLUSH SYNC_BDFLUSH is a leftover from IRIX and rather misnamed for todays code. Make xfs_sync_fsdata and xfs_dq_sync use the SYNC_TRYLOCK flag for not blocking on logs just as the inode sync code already does. For xfs_sync_fsdata it's a trivial 1:1 replacement, but for xfs_qm_sync I use the opportunity to decouple the non-blocking lock case from the different flushing modes, similar to the inode sync code. Signed-off-by: Christoph Hellwig Reviewed-by: Eric Sandeen --- fs/xfs/linux-2.6/xfs_sync.c | 8 ++++---- fs/xfs/linux-2.6/xfs_sync.h | 5 ++--- fs/xfs/quota/xfs_qm.c | 28 +++++----------------------- 3 files changed, 11 insertions(+), 30 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_sync.h') diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index 32abd96b1095..b619d6b8ca43 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -353,7 +353,7 @@ xfs_sync_fsdata( * If this is xfssyncd() then only sync the superblock if we can * lock it without sleeping and it is not pinned. */ - if (flags & SYNC_BDFLUSH) { + if (flags & SYNC_TRYLOCK) { ASSERT(!(flags & SYNC_WAIT)); bp = xfs_getsb(mp, XFS_BUF_TRYLOCK); @@ -418,7 +418,7 @@ xfs_quiesce_data( /* push non-blocking */ xfs_sync_data(mp, 0); - xfs_qm_sync(mp, SYNC_BDFLUSH); + xfs_qm_sync(mp, SYNC_TRYLOCK); xfs_filestream_flush(mp); /* push and block */ @@ -568,8 +568,8 @@ xfs_sync_worker( xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); xfs_reclaim_inodes(mp, XFS_IFLUSH_DELWRI_ELSE_ASYNC); /* dgc: errors ignored here */ - error = xfs_qm_sync(mp, SYNC_BDFLUSH); - error = xfs_sync_fsdata(mp, SYNC_BDFLUSH); + error = xfs_qm_sync(mp, SYNC_TRYLOCK); + error = xfs_sync_fsdata(mp, SYNC_TRYLOCK); if (xfs_log_need_covered(mp)) error = xfs_commit_dummy_trans(mp, XFS_LOG_FORCE); } diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index bda33a03e12b..2a10301c99c7 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -29,9 +29,8 @@ typedef struct xfs_sync_work { struct completion *w_completion; } xfs_sync_work_t; -#define SYNC_WAIT 0x0004 /* wait for i/o to complete */ -#define SYNC_BDFLUSH 0x0008 /* BDFLUSH is calling -- don't block */ -#define SYNC_TRYLOCK 0x0020 /* only try to lock inodes */ +#define SYNC_WAIT 0x0001 /* wait for i/o to complete */ +#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ int xfs_syncd_init(struct xfs_mount *mp); void xfs_syncd_stop(struct xfs_mount *mp); diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index aa5d8212661c..22b7c8d364e8 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -905,11 +905,6 @@ xfs_qm_dqdetach( } } -/* - * This is called to sync quotas. We can be told to use non-blocking - * semantics by either the SYNC_BDFLUSH flag or the absence of the - * SYNC_WAIT flag. - */ int xfs_qm_sync( xfs_mount_t *mp, @@ -918,17 +913,13 @@ xfs_qm_sync( int recl, restarts; xfs_dquot_t *dqp; uint flush_flags; - boolean_t nowait; int error; if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) return 0; + flush_flags = (flags & SYNC_WAIT) ? XFS_QMOPT_SYNC : XFS_QMOPT_DELWRI; restarts = 0; - /* - * We won't block unless we are asked to. - */ - nowait = (boolean_t)(flags & SYNC_BDFLUSH || (flags & SYNC_WAIT) == 0); again: xfs_qm_mplist_lock(mp); @@ -948,18 +939,10 @@ xfs_qm_sync( * don't 'seem' to be dirty. ie. don't acquire dqlock. * This is very similar to what xfs_sync does with inodes. */ - if (flags & SYNC_BDFLUSH) { - if (! XFS_DQ_IS_DIRTY(dqp)) + if (flags & SYNC_TRYLOCK) { + if (!XFS_DQ_IS_DIRTY(dqp)) continue; - } - - if (nowait) { - /* - * Try to acquire the dquot lock. We are NOT out of - * lock order, but we just don't want to wait for this - * lock, unless somebody wanted us to. - */ - if (! xfs_qm_dqlock_nowait(dqp)) + if (!xfs_qm_dqlock_nowait(dqp)) continue; } else { xfs_dqlock(dqp); @@ -976,7 +959,7 @@ xfs_qm_sync( /* XXX a sentinel would be better */ recl = XFS_QI_MPLRECLAIMS(mp); if (!xfs_dqflock_nowait(dqp)) { - if (nowait) { + if (flags & SYNC_TRYLOCK) { xfs_dqunlock(dqp); continue; } @@ -994,7 +977,6 @@ xfs_qm_sync( * Let go of the mplist lock. We don't want to hold it * across a disk write */ - flush_flags = (nowait) ? XFS_QMOPT_DELWRI : XFS_QMOPT_SYNC; xfs_qm_mplist_unlock(mp); xfs_dqtrace_entry(dqp, "XQM_SYNC: DQFLUSH"); error = xfs_qm_dqflush(dqp, flush_flags); -- cgit v1.2.3