From 93b8a5854f247138e401471a9c3b82ccb62ff608 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 6 Dec 2011 21:58:07 +0000 Subject: xfs: remove the deprecated nodelaylog option The delaylog mode has been the default for a long time, and the nodelaylog option has been scheduled for removal in Linux 3.3. Remove it and code only used by it now that we have opened the 3.3 window. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Ben Myers --- fs/xfs/xfs_super.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 3eca58f51ae9..0e76348d958a 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -199,7 +199,6 @@ xfs_parseargs( mp->m_flags |= XFS_MOUNT_BARRIER; mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; mp->m_flags |= XFS_MOUNT_SMALL_INUMS; - mp->m_flags |= XFS_MOUNT_DELAYLOG; /* * These can be overridden by the mount option parsing. @@ -353,11 +352,11 @@ xfs_parseargs( mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); mp->m_qflags &= ~XFS_OQUOTA_ENFD; } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { - mp->m_flags |= XFS_MOUNT_DELAYLOG; + xfs_warn(mp, + "delaylog is the default now, option is deprecated."); } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { - mp->m_flags &= ~XFS_MOUNT_DELAYLOG; xfs_warn(mp, - "nodelaylog is deprecated and will be removed in Linux 3.3"); + "nodelaylog support has been removed, option is deprecated."); } else if (!strcmp(this_char, MNTOPT_DISCARD)) { mp->m_flags |= XFS_MOUNT_DISCARD; } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { @@ -395,13 +394,6 @@ xfs_parseargs( return EINVAL; } - if ((mp->m_flags & XFS_MOUNT_DISCARD) && - !(mp->m_flags & XFS_MOUNT_DELAYLOG)) { - xfs_warn(mp, - "the discard option is incompatible with the nodelaylog option"); - return EINVAL; - } - #ifndef CONFIG_XFS_QUOTA if (XFS_IS_QUOTA_RUNNING(mp)) { xfs_warn(mp, "quota support not available in this kernel."); @@ -501,7 +493,6 @@ xfs_showargs( { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, - { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, { 0, NULL } }; -- cgit v1.2.3 From 34625c661b01dab193c7e8a0151a63553e97cfdf Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 6 Dec 2011 21:58:12 +0000 Subject: xfs: remove xfs_qm_sync Now that we can't have any dirty dquots around that aren't in the AIL we can get rid of the explicit dquot syncing from xfssyncd and xfs_fs_sync_fs and instead rely on AIL pushing to write out any quota updates. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Ben Myers --- fs/xfs/xfs_qm.c | 94 ------------------------------------------------------ fs/xfs/xfs_qm.h | 6 ---- fs/xfs/xfs_quota.h | 5 --- fs/xfs/xfs_super.c | 11 ++----- fs/xfs/xfs_sync.c | 6 +--- 5 files changed, 3 insertions(+), 119 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index c704ea0115d5..9bf32558f5f4 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -879,100 +879,6 @@ xfs_qm_dqdetach( } } -int -xfs_qm_sync( - struct xfs_mount *mp, - int flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - int recl, restarts; - struct xfs_dquot *dqp; - int error; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - restarts = 0; - - again: - mutex_lock(&q->qi_dqlist_lock); - /* - * dqpurge_all() also takes the mplist lock and iterate thru all dquots - * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared - * when we have the mplist lock, we know that dquots will be consistent - * as long as we have it locked. - */ - if (!XFS_IS_QUOTA_ON(mp)) { - mutex_unlock(&q->qi_dqlist_lock); - return 0; - } - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - /* - * If this is vfs_sync calling, then skip the dquots that - * 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_TRYLOCK) { - if (!XFS_DQ_IS_DIRTY(dqp)) - continue; - if (!xfs_qm_dqlock_nowait(dqp)) - continue; - } else { - xfs_dqlock(dqp); - } - - /* - * Now, find out for sure if this dquot is dirty or not. - */ - if (! XFS_DQ_IS_DIRTY(dqp)) { - xfs_dqunlock(dqp); - continue; - } - - /* XXX a sentinel would be better */ - recl = q->qi_dqreclaims; - if (!xfs_dqflock_nowait(dqp)) { - if (flags & SYNC_TRYLOCK) { - xfs_dqunlock(dqp); - continue; - } - /* - * If we can't grab the flush lock then if the caller - * really wanted us to give this our best shot, so - * see if we can give a push to the buffer before we wait - * on the flush lock. At this point, we know that - * even though the dquot is being flushed, - * it has (new) dirty data. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - /* - * Let go of the mplist lock. We don't want to hold it - * across a disk write - */ - mutex_unlock(&q->qi_dqlist_lock); - error = xfs_qm_dqflush(dqp, flags); - xfs_dqunlock(dqp); - if (error && XFS_FORCED_SHUTDOWN(mp)) - return 0; /* Need to prevent umount failure */ - else if (error) - return error; - - mutex_lock(&q->qi_dqlist_lock); - if (recl != q->qi_dqreclaims) { - if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) - break; - - mutex_unlock(&q->qi_dqlist_lock); - goto again; - } - } - - mutex_unlock(&q->qi_dqlist_lock); - return 0; -} - /* * The hash chains and the mplist use the same xfs_dqhash structure as * their list head, but we can take the mplist qh_lock and one of the diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h index 43b9abe1052c..9b4f3adefbc5 100644 --- a/fs/xfs/xfs_qm.h +++ b/fs/xfs/xfs_qm.h @@ -32,12 +32,6 @@ extern struct xfs_qm *xfs_Gqm; extern kmem_zone_t *qm_dqzone; extern kmem_zone_t *qm_dqtrxzone; -/* - * Used in xfs_qm_sync called by xfs_sync to count the max times that it can - * iterate over the mountpt's dquot list in one call. - */ -#define XFS_QM_SYNC_MAX_RESTARTS 7 - /* * Ditto, for xfs_qm_dqreclaim_one. */ diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index a595f29567fe..707ba33e3196 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -326,7 +326,6 @@ extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint); extern void xfs_qm_dqdetach(struct xfs_inode *); extern void xfs_qm_dqrele(struct xfs_dquot *); extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *); -extern int xfs_qm_sync(struct xfs_mount *, int); extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *); extern void xfs_qm_mount_quotas(struct xfs_mount *); extern void xfs_qm_unmount(struct xfs_mount *); @@ -366,10 +365,6 @@ static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp, #define xfs_qm_dqdetach(ip) #define xfs_qm_dqrele(d) #define xfs_qm_statvfs(ip, s) -static inline int xfs_qm_sync(struct xfs_mount *mp, int flags) -{ - return 0; -} #define xfs_qm_newmount(mp, a, b) (0) #define xfs_qm_mount_quotas(mp) #define xfs_qm_unmount(mp) diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 0e76348d958a..88cd0c893163 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1025,17 +1025,10 @@ xfs_fs_sync_fs( int error; /* - * Not much we can do for the first async pass. Writing out the - * superblock would be counter-productive as we are going to redirty - * when writing out other data and metadata (and writing out a single - * block is quite fast anyway). - * - * Try to asynchronously kick off quota syncing at least. + * Doing anything during the async pass would be counterproductive. */ - if (!wait) { - xfs_qm_sync(mp, SYNC_TRYLOCK); + if (!wait) return 0; - } error = xfs_quiesce_data(mp); if (error) diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c index be5c51d8f757..5b9ec37a3e07 100644 --- a/fs/xfs/xfs_sync.c +++ b/fs/xfs/xfs_sync.c @@ -359,10 +359,7 @@ xfs_quiesce_data( { int error, error2 = 0; - xfs_qm_sync(mp, SYNC_TRYLOCK); - xfs_qm_sync(mp, SYNC_WAIT); - - /* force out the newly dirtied log buffers */ + /* force out the log */ xfs_log_force(mp, XFS_LOG_SYNC); /* write superblock and hoover up shutdown errors */ @@ -470,7 +467,6 @@ xfs_sync_worker( error = xfs_fs_log_dummy(mp); else xfs_log_force(mp, 0); - error = xfs_qm_sync(mp, SYNC_TRYLOCK); /* start pushing all the metadata that is currently dirty */ xfs_ail_push_all(mp->m_ail); -- cgit v1.2.3 From 40d344ec5ee440596b1f3ae87556e20c7197757a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 5 Dec 2011 08:53:21 +0000 Subject: xfs: mark the xfssyncd workqueue as non-reentrant On a system with lots of memory pressure that is stuck on synchronous inode reclaim the workqueue code will run one instance of the inode reclaim work item on every CPU. which is not what we want. Make sure to mark the xfssyncd workqueue as non-reentrant to make sure there only is one instace of each running globally. Also stop using special paramater for the workqueue; now that we guarantee each fs has only running one of each works at a time there is no need to artificially lower max_active and compensate for that by setting the WQ_CPU_INTENSIVE flag. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Ben Myers --- fs/xfs/xfs_super.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 88cd0c893163..5f955f42377e 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1625,12 +1625,12 @@ STATIC int __init xfs_init_workqueues(void) { /* - * max_active is set to 8 to give enough concurency to allow - * multiple work operations on each CPU to run. This allows multiple - * filesystems to be running sync work concurrently, and scales with - * the number of CPUs in the system. + * We never want to the same work item to run twice, reclaiming inodes + * or idling the log is not going to get any faster by multiple CPUs + * competing for ressources. Use the default large max_active value + * so that even lots of filesystems can perform these task in parallel. */ - xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_CPU_INTENSIVE, 8); + xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0); if (!xfs_syncd_wq) return -ENOMEM; return 0; -- cgit v1.2.3 From 0b8fd3033c308e4088760aa1d38ce77197b4e074 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 18 Dec 2011 15:49:55 +0000 Subject: xfs: log the inode in ->write_inode calls for kupdate If the writeback code writes back an inode because it has expired we currently use the non-blockin ->write_inode path. This means any inode that is pinned is skipped. With delayed logging and a workload that has very little log traffic otherwise it is very likely that an inode that gets constantly written to is always pinned, and thus we keep refusing to write it. The VM writeback code at that point redirties it and doesn't try to write it again for another 30 seconds. This means under certain scenarious time based metadata writeback never happens. Fix this by calling into xfs_log_inode for kupdate in addition to data integrity syncs, and thus transfer the inode to the log ASAP. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Tested-by: Mark Tinguely Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 3eca58f51ae9..1add17ca3350 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -905,7 +905,7 @@ xfs_fs_write_inode( if (!ip->i_update_core) return 0; - if (wbc->sync_mode == WB_SYNC_ALL) { + if (wbc->sync_mode == WB_SYNC_ALL || wbc->for_kupdate) { /* * Make sure the inode has made it it into the log. Instead * of forcing it all the way to stable storage using a -- cgit v1.2.3 From be4f1ac828776bbc7868a68b465cd8eedb733cfd Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 20 Dec 2011 20:08:41 +0000 Subject: xfs: log all dirty inodes in xfs_fs_sync_fs Since Linux 2.6.36 the writeback code has introduces various measures for live lock prevention during sync(). Unfortunately some of these are actively harmful for the XFS model, where the inode gets marked dirty for metadata from the data I/O handler. The older_than_this checks that are now more strictly enforced since writeback: avoid livelocking WB_SYNC_ALL writeback by only calling into __writeback_inodes_sb and thus only sampling the current cut off time once. But on a slow enough devices the previous asynchronous sync pass might not have fully completed yet, and thus XFS might mark metadata dirty only after that sampling of the cut off time for the blocking pass already happened. I have not myself reproduced this myself on a real system, but by introducing artificial delay into the XFS I/O completion workqueues it can be reproduced easily. Fix this by iterating over all XFS inodes in ->sync_fs and log all that are dirty. This might log inode that only got redirtied after the previous pass, but given how cheap delayed logging of inodes is it isn't a major concern for performance. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Tested-by: Mark Tinguely Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_super.c | 28 ++++------------------------ fs/xfs/xfs_sync.c | 36 ++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_sync.h | 2 ++ 3 files changed, 42 insertions(+), 24 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 1add17ca3350..8a899496fd5f 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -868,27 +868,6 @@ xfs_fs_dirty_inode( XFS_I(inode)->i_update_core = 1; } -STATIC int -xfs_log_inode( - struct xfs_inode *ip) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_trans *tp; - int error; - - tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - return xfs_trans_commit(tp, 0); -} - STATIC int xfs_fs_write_inode( struct inode *inode, @@ -902,8 +881,6 @@ xfs_fs_write_inode( if (XFS_FORCED_SHUTDOWN(mp)) return -XFS_ERROR(EIO); - if (!ip->i_update_core) - return 0; if (wbc->sync_mode == WB_SYNC_ALL || wbc->for_kupdate) { /* @@ -913,11 +890,14 @@ xfs_fs_write_inode( * ->sync_fs call do that for thus, which reduces the number * of synchronous log forces dramatically. */ - error = xfs_log_inode(ip); + error = xfs_log_dirty_inode(ip, NULL, 0); if (error) goto out; return 0; } else { + if (!ip->i_update_core) + return 0; + /* * We make this non-blocking if the inode is contended, return * EAGAIN to indicate to the caller that they did not succeed. diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c index be5c51d8f757..f0994aedcd15 100644 --- a/fs/xfs/xfs_sync.c +++ b/fs/xfs/xfs_sync.c @@ -336,6 +336,32 @@ xfs_sync_fsdata( return error; } +int +xfs_log_dirty_inode( + struct xfs_inode *ip, + struct xfs_perag *pag, + int flags) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error; + + if (!ip->i_update_core) + return 0; + + tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + return xfs_trans_commit(tp, 0); +} + /* * When remounting a filesystem read-only or freezing the filesystem, we have * two phases to execute. This first phase is syncing the data before we @@ -359,6 +385,16 @@ xfs_quiesce_data( { int error, error2 = 0; + /* + * Log all pending size and timestamp updates. The vfs writeback + * code is supposed to do this, but due to its overagressive + * livelock detection it will skip inodes where appending writes + * were written out in the first non-blocking sync phase if their + * completion took long enough that it happened after taking the + * timestamp for the cut-off in the blocking phase. + */ + xfs_inode_ag_iterator(mp, xfs_log_dirty_inode, 0); + xfs_qm_sync(mp, SYNC_TRYLOCK); xfs_qm_sync(mp, SYNC_WAIT); diff --git a/fs/xfs/xfs_sync.h b/fs/xfs/xfs_sync.h index 941202e7ac6e..fa965479d788 100644 --- a/fs/xfs/xfs_sync.h +++ b/fs/xfs/xfs_sync.h @@ -34,6 +34,8 @@ void xfs_quiesce_attr(struct xfs_mount *mp); void xfs_flush_inodes(struct xfs_inode *ip); +int xfs_log_dirty_inode(struct xfs_inode *ip, struct xfs_perag *pag, int flags); + int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); int xfs_reclaim_inodes_count(struct xfs_mount *mp); void xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); -- cgit v1.2.3 From 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 Dec 2011 21:32:45 -0500 Subject: vfs: switch ->show_options() to struct dentry * Signed-off-by: Al Viro --- Documentation/filesystems/Locking | 2 +- Documentation/filesystems/vfs.txt | 2 +- arch/s390/hypfs/inode.c | 4 ++-- drivers/staging/pohmelfs/inode.c | 4 ++-- drivers/usb/core/inode.c | 2 +- fs/adfs/super.c | 4 ++-- fs/autofs4/inode.c | 6 +++--- fs/btrfs/super.c | 4 ++-- fs/ceph/super.c | 6 +++--- fs/cifs/cifsfs.c | 6 +++--- fs/devpts/inode.c | 4 ++-- fs/ecryptfs/super.c | 4 ++-- fs/ext2/super.c | 4 ++-- fs/ext3/super.c | 4 ++-- fs/ext4/super.c | 4 ++-- fs/fat/inode.c | 6 +++--- fs/fuse/inode.c | 10 +++++----- fs/gfs2/super.c | 8 ++++---- fs/hfs/super.c | 4 ++-- fs/hfsplus/hfsplus_fs.h | 2 +- fs/hfsplus/options.c | 4 ++-- fs/hostfs/hostfs_kern.c | 4 ++-- fs/jffs2/super.c | 4 ++-- fs/jfs/super.c | 4 ++-- fs/namespace.c | 4 ++-- fs/ncpfs/inode.c | 6 +++--- fs/nfs/super.c | 6 +++--- fs/nilfs2/super.c | 6 +++--- fs/ntfs/inode.c | 8 ++++---- fs/ntfs/inode.h | 2 +- fs/ocfs2/super.c | 9 ++++----- fs/proc_namespace.c | 4 ++-- fs/ubifs/super.c | 4 ++-- fs/udf/super.c | 6 +++--- fs/ufs/super.c | 4 ++-- fs/xfs/xfs_super.c | 4 ++-- include/linux/fs.h | 4 ++-- kernel/cgroup.c | 4 ++-- mm/shmem.c | 4 ++-- 39 files changed, 90 insertions(+), 91 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 9e9f30b9f46b..4fca82e5276e 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -117,7 +117,7 @@ prototypes: int (*statfs) (struct dentry *, struct kstatfs *); int (*remount_fs) (struct super_block *, int *, char *); void (*umount_begin) (struct super_block *); - int (*show_options)(struct seq_file *, struct vfsmount *); + int (*show_options)(struct seq_file *, struct dentry *); ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 4b9f0d092a79..3d9393b845b8 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -225,7 +225,7 @@ struct super_operations { void (*clear_inode) (struct inode *); void (*umount_begin) (struct super_block *); - int (*show_options)(struct seq_file *, struct vfsmount *); + int (*show_options)(struct seq_file *, struct dentry *); ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index 98efd2d6207a..8a2a887478cc 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -259,9 +259,9 @@ static int hypfs_parse_options(char *options, struct super_block *sb) return 0; } -static int hypfs_show_options(struct seq_file *s, struct vfsmount *mnt) +static int hypfs_show_options(struct seq_file *s, struct dentry *root) { - struct hypfs_sb_info *hypfs_info = mnt->mnt_sb->s_fs_info; + struct hypfs_sb_info *hypfs_info = root->d_sb->s_fs_info; seq_printf(s, ",uid=%u", hypfs_info->uid); seq_printf(s, ",gid=%u", hypfs_info->gid); diff --git a/drivers/staging/pohmelfs/inode.c b/drivers/staging/pohmelfs/inode.c index 91ec29e112bc..807e3f324113 100644 --- a/drivers/staging/pohmelfs/inode.c +++ b/drivers/staging/pohmelfs/inode.c @@ -1369,9 +1369,9 @@ static int pohmelfs_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; } -static int pohmelfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int pohmelfs_show_options(struct seq_file *seq, struct dentry *root) { - struct pohmelfs_sb *psb = POHMELFS_SB(vfs->mnt_sb); + struct pohmelfs_sb *psb = POHMELFS_SB(root->d_sb); seq_printf(seq, ",idx=%u", psb->idx); seq_printf(seq, ",trans_scan_timeout=%u", jiffies_to_msecs(psb->trans_scan_timeout)); diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index 2b60af2ce3ba..9e186f3da839 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -65,7 +65,7 @@ static umode_t devmode = USBFS_DEFAULT_DEVMODE; static umode_t busmode = USBFS_DEFAULT_BUSMODE; static umode_t listmode = USBFS_DEFAULT_LISTMODE; -static int usbfs_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int usbfs_show_options(struct seq_file *seq, struct dentry *root) { if (devuid != 0) seq_printf(seq, ",devuid=%u", devuid); diff --git a/fs/adfs/super.c b/fs/adfs/super.c index c8bf36a1996a..8e3b36ace305 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -126,9 +126,9 @@ static void adfs_put_super(struct super_block *sb) sb->s_fs_info = NULL; } -static int adfs_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int adfs_show_options(struct seq_file *seq, struct dentry *root) { - struct adfs_sb_info *asb = ADFS_SB(mnt->mnt_sb); + struct adfs_sb_info *asb = ADFS_SB(root->d_sb); if (asb->s_uid != 0) seq_printf(seq, ",uid=%u", asb->s_uid); diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index f799efad52a8..2ba44c79d548 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -70,10 +70,10 @@ out_kill_sb: kill_litter_super(sb); } -static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt) +static int autofs4_show_options(struct seq_file *m, struct dentry *root) { - struct autofs_sb_info *sbi = autofs4_sbi(mnt->mnt_sb); - struct inode *root_inode = mnt->mnt_sb->s_root->d_inode; + struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb); + struct inode *root_inode = root->d_sb->s_root->d_inode; if (!sbi) return 0; diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index dc62d3cc68fd..ae488aa1966a 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -661,9 +661,9 @@ int btrfs_sync_fs(struct super_block *sb, int wait) return ret; } -static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) { - struct btrfs_root *root = btrfs_sb(vfs->mnt_sb); + struct btrfs_root *root = btrfs_sb(dentry->d_sb); struct btrfs_fs_info *info = root->fs_info; char *compress_type; diff --git a/fs/ceph/super.c b/fs/ceph/super.c index b48f15f101a0..11bd0fc4853f 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -341,11 +341,11 @@ out: /** * ceph_show_options - Show mount options in /proc/mounts * @m: seq_file to write to - * @mnt: mount descriptor + * @root: root of that (sub)tree */ -static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt) +static int ceph_show_options(struct seq_file *m, struct dentry *root) { - struct ceph_fs_client *fsc = ceph_sb_to_client(mnt->mnt_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(root->d_sb); struct ceph_mount_options *fsopt = fsc->mount_options; struct ceph_options *opt = fsc->client->options; diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 0cb89dc6526c..b1fd382d1952 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -343,9 +343,9 @@ cifs_show_security(struct seq_file *s, struct TCP_Server_Info *server) * ones are. */ static int -cifs_show_options(struct seq_file *s, struct vfsmount *m) +cifs_show_options(struct seq_file *s, struct dentry *root) { - struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb); + struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); struct sockaddr *srcaddr; srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; @@ -430,7 +430,7 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) seq_printf(s, ",cifsacl"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) seq_printf(s, ",dynperm"); - if (m->mnt_sb->s_flags & MS_POSIXACL) + if (root->d_sb->s_flags & MS_POSIXACL) seq_printf(s, ",acl"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) seq_printf(s, ",mfsymlinks"); diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index d5d5297efe97..79673eb71151 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -246,9 +246,9 @@ static int devpts_remount(struct super_block *sb, int *flags, char *data) return err; } -static int devpts_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int devpts_show_options(struct seq_file *seq, struct dentry *root) { - struct pts_fs_info *fsi = DEVPTS_SB(vfs->mnt_sb); + struct pts_fs_info *fsi = DEVPTS_SB(root->d_sb); struct pts_mount_opts *opts = &fsi->mount_opts; if (opts->setuid) diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index da485f0b4d1e..9df7fd6e0c39 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -131,9 +131,9 @@ static void ecryptfs_evict_inode(struct inode *inode) * Prints the mount options for a given superblock. * Returns zero; does not fail. */ -static int ecryptfs_show_options(struct seq_file *m, struct vfsmount *mnt) +static int ecryptfs_show_options(struct seq_file *m, struct dentry *root) { - struct super_block *sb = mnt->mnt_sb; + struct super_block *sb = root->d_sb; struct ecryptfs_mount_crypt_stat *mount_crypt_stat = &ecryptfs_superblock_to_private(sb)->mount_crypt_stat; struct ecryptfs_global_auth_tok *walker; diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 67b5e752ec9d..9b403f064ce0 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -210,9 +210,9 @@ static void destroy_inodecache(void) kmem_cache_destroy(ext2_inode_cachep); } -static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int ext2_show_options(struct seq_file *seq, struct dentry *root) { - struct super_block *sb = vfs->mnt_sb; + struct super_block *sb = root->d_sb; struct ext2_sb_info *sbi = EXT2_SB(sb); struct ext2_super_block *es = sbi->s_es; unsigned long def_mount_opts; diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 7e8944ee67c6..3a10b884e1be 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -610,9 +610,9 @@ static char *data_mode_string(unsigned long mode) * - it's set to a non-default value OR * - if the per-sb default is different from the global default */ -static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int ext3_show_options(struct seq_file *seq, struct dentry *root) { - struct super_block *sb = vfs->mnt_sb; + struct super_block *sb = root->d_sb; struct ext3_sb_info *sbi = EXT3_SB(sb); struct ext3_super_block *es = sbi->s_es; unsigned long def_mount_opts; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b739b210a616..6733b3736b3b 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1032,11 +1032,11 @@ static inline void ext4_show_quota_options(struct seq_file *seq, * - it's set to a non-default value OR * - if the per-sb default is different from the global default */ -static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int ext4_show_options(struct seq_file *seq, struct dentry *root) { int def_errors; unsigned long def_mount_opts; - struct super_block *sb = vfs->mnt_sb; + struct super_block *sb = root->d_sb; struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index ef44e5f98ced..7873797cc76a 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -671,7 +671,7 @@ int fat_sync_inode(struct inode *inode) EXPORT_SYMBOL_GPL(fat_sync_inode); -static int fat_show_options(struct seq_file *m, struct vfsmount *mnt); +static int fat_show_options(struct seq_file *m, struct dentry *root); static const struct super_operations fat_sops = { .alloc_inode = fat_alloc_inode, .destroy_inode = fat_destroy_inode, @@ -810,9 +810,9 @@ static const struct export_operations fat_export_ops = { .get_parent = fat_get_parent, }; -static int fat_show_options(struct seq_file *m, struct vfsmount *mnt) +static int fat_show_options(struct seq_file *m, struct dentry *root) { - struct msdos_sb_info *sbi = MSDOS_SB(mnt->mnt_sb); + struct msdos_sb_info *sbi = MSDOS_SB(root->d_sb); struct fat_mount_options *opts = &sbi->options; int isvfat = opts->isvfat; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 3d3622a1ceac..64cf8d07393e 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -497,9 +497,10 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev) return 1; } -static int fuse_show_options(struct seq_file *m, struct vfsmount *mnt) +static int fuse_show_options(struct seq_file *m, struct dentry *root) { - struct fuse_conn *fc = get_fuse_conn_super(mnt->mnt_sb); + struct super_block *sb = root->d_sb; + struct fuse_conn *fc = get_fuse_conn_super(sb); seq_printf(m, ",user_id=%u", fc->user_id); seq_printf(m, ",group_id=%u", fc->group_id); @@ -509,9 +510,8 @@ static int fuse_show_options(struct seq_file *m, struct vfsmount *mnt) seq_puts(m, ",allow_other"); if (fc->max_read != ~0) seq_printf(m, ",max_read=%u", fc->max_read); - if (mnt->mnt_sb->s_bdev && - mnt->mnt_sb->s_blocksize != FUSE_DEFAULT_BLKSIZE) - seq_printf(m, ",blksize=%lu", mnt->mnt_sb->s_blocksize); + if (sb->s_bdev && sb->s_blocksize != FUSE_DEFAULT_BLKSIZE) + seq_printf(m, ",blksize=%lu", sb->s_blocksize); return 0; } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 9e89d94be003..10c7733a899b 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1284,18 +1284,18 @@ static int is_ancestor(const struct dentry *d1, const struct dentry *d2) /** * gfs2_show_options - Show mount options for /proc/mounts * @s: seq_file structure - * @mnt: vfsmount + * @root: root of this (sub)tree * * Returns: 0 on success or error code */ -static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) +static int gfs2_show_options(struct seq_file *s, struct dentry *root) { - struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info; + struct gfs2_sbd *sdp = root->d_sb->s_fs_info; struct gfs2_args *args = &sdp->sd_args; int val; - if (is_ancestor(mnt->mnt_root, sdp->sd_master_dir)) + if (is_ancestor(root, sdp->sd_master_dir)) seq_printf(s, ",meta"); if (args->ar_lockproto[0]) seq_printf(s, ",lockproto=%s", args->ar_lockproto); diff --git a/fs/hfs/super.c b/fs/hfs/super.c index 32dc2fbb26d5..8137fb3e6780 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -133,9 +133,9 @@ static int hfs_remount(struct super_block *sb, int *flags, char *data) return 0; } -static int hfs_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int hfs_show_options(struct seq_file *seq, struct dentry *root) { - struct hfs_sb_info *sbi = HFS_SB(mnt->mnt_sb); + struct hfs_sb_info *sbi = HFS_SB(root->d_sb); if (sbi->s_creator != cpu_to_be32(0x3f3f3f3f)) seq_printf(seq, ",creator=%.4s", (char *)&sbi->s_creator); diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 3a6c025414e2..21a5b7fc6db4 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -419,7 +419,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); int hfsplus_parse_options(char *, struct hfsplus_sb_info *); int hfsplus_parse_options_remount(char *input, int *force); void hfsplus_fill_defaults(struct hfsplus_sb_info *); -int hfsplus_show_options(struct seq_file *, struct vfsmount *); +int hfsplus_show_options(struct seq_file *, struct dentry *); /* super.c */ struct inode *hfsplus_iget(struct super_block *, unsigned long); diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c index bb62a5882147..06fa5618600c 100644 --- a/fs/hfsplus/options.c +++ b/fs/hfsplus/options.c @@ -206,9 +206,9 @@ done: return 1; } -int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt) +int hfsplus_show_options(struct seq_file *seq, struct dentry *root) { - struct hfsplus_sb_info *sbi = HFSPLUS_SB(mnt->mnt_sb); + struct hfsplus_sb_info *sbi = HFSPLUS_SB(root->d_sb); if (sbi->creator != HFSPLUS_DEF_CR_TYPE) seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator); diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index a7340e710a90..e130bd46d671 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -258,9 +258,9 @@ static void hostfs_destroy_inode(struct inode *inode) call_rcu(&inode->i_rcu, hostfs_i_callback); } -static int hostfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int hostfs_show_options(struct seq_file *seq, struct dentry *root) { - const char *root_path = vfs->mnt_sb->s_fs_info; + const char *root_path = root->d_sb->s_fs_info; size_t offset = strlen(root_ino) + 1; if (strlen(root_path) > offset) diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c index 804e1292d63e..8be4925296cf 100644 --- a/fs/jffs2/super.c +++ b/fs/jffs2/super.c @@ -96,9 +96,9 @@ static const char *jffs2_compr_name(unsigned int compr) } } -static int jffs2_show_options(struct seq_file *s, struct vfsmount *mnt) +static int jffs2_show_options(struct seq_file *s, struct dentry *root) { - struct jffs2_sb_info *c = JFFS2_SB_INFO(mnt->mnt_sb); + struct jffs2_sb_info *c = JFFS2_SB_INFO(root->d_sb); struct jffs2_mount_opts *opts = &c->mount_opts; if (opts->override_compr) diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 1b8f4ca29adf..682bca642f38 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -608,9 +608,9 @@ static int jfs_sync_fs(struct super_block *sb, int wait) return 0; } -static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int jfs_show_options(struct seq_file *seq, struct dentry *root) { - struct jfs_sb_info *sbi = JFS_SBI(vfs->mnt_sb); + struct jfs_sb_info *sbi = JFS_SBI(root->d_sb); if (sbi->uid != -1) seq_printf(seq, ",uid=%d", sbi->uid); diff --git a/fs/namespace.c b/fs/namespace.c index 773435ca300d..db65e2e4921f 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -836,12 +836,12 @@ static inline void mangle(struct seq_file *m, const char *s) * * See also save_mount_options(). */ -int generic_show_options(struct seq_file *m, struct vfsmount *mnt) +int generic_show_options(struct seq_file *m, struct dentry *root) { const char *options; rcu_read_lock(); - options = rcu_dereference(mnt->mnt_sb->s_options); + options = rcu_dereference(root->d_sb->s_options); if (options != NULL && options[0]) { seq_putc(m, ','); diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index f3f07cd392b3..3d1e34f8a68e 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -44,7 +44,7 @@ static void ncp_evict_inode(struct inode *); static void ncp_put_super(struct super_block *); static int ncp_statfs(struct dentry *, struct kstatfs *); -static int ncp_show_options(struct seq_file *, struct vfsmount *); +static int ncp_show_options(struct seq_file *, struct dentry *); static struct kmem_cache * ncp_inode_cachep; @@ -322,9 +322,9 @@ static void ncp_stop_tasks(struct ncp_server *server) { flush_work_sync(&server->timeout_tq); } -static int ncp_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int ncp_show_options(struct seq_file *seq, struct dentry *root) { - struct ncp_server *server = NCP_SBP(mnt->mnt_sb); + struct ncp_server *server = NCP_SBP(root->d_sb); unsigned int tmp; if (server->m.uid != 0) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 02c693c77ab7..e463967aafb8 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -262,7 +262,7 @@ static match_table_t nfs_local_lock_tokens = { static void nfs_umount_begin(struct super_block *); static int nfs_statfs(struct dentry *, struct kstatfs *); -static int nfs_show_options(struct seq_file *, struct vfsmount *); +static int nfs_show_options(struct seq_file *, struct dentry *); static int nfs_show_devname(struct seq_file *, struct dentry *); static int nfs_show_path(struct seq_file *, struct dentry *); static int nfs_show_stats(struct seq_file *, struct dentry *); @@ -720,9 +720,9 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, /* * Describe the mount options on this VFS mountpoint */ -static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt) +static int nfs_show_options(struct seq_file *m, struct dentry *root) { - struct nfs_server *nfss = NFS_SB(mnt->mnt_sb); + struct nfs_server *nfss = NFS_SB(root->d_sb); nfs_show_mount_options(m, nfss, 0); diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 5356c7169d50..08e3d4f9df18 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -648,11 +648,11 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; } -static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int nilfs_show_options(struct seq_file *seq, struct dentry *dentry) { - struct super_block *sb = vfs->mnt_sb; + struct super_block *sb = dentry->d_sb; struct the_nilfs *nilfs = sb->s_fs_info; - struct nilfs_root *root = NILFS_I(vfs->mnt_root->d_inode)->i_root; + struct nilfs_root *root = NILFS_I(dentry->d_inode)->i_root; if (!nilfs_test_opt(nilfs, BARRIER)) seq_puts(seq, ",nobarrier"); diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index fea40bb6fb68..2eaa66652944 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -2300,16 +2300,16 @@ void ntfs_evict_big_inode(struct inode *vi) /** * ntfs_show_options - show mount options in /proc/mounts * @sf: seq_file in which to write our mount options - * @mnt: vfs mount whose mount options to display + * @root: root of the mounted tree whose mount options to display * * Called by the VFS once for each mounted ntfs volume when someone reads * /proc/mounts in order to display the NTFS specific mount options of each - * mount. The mount options of the vfs mount @mnt are written to the seq file + * mount. The mount options of fs specified by @root are written to the seq file * @sf and success is returned. */ -int ntfs_show_options(struct seq_file *sf, struct vfsmount *mnt) +int ntfs_show_options(struct seq_file *sf, struct dentry *root) { - ntfs_volume *vol = NTFS_SB(mnt->mnt_sb); + ntfs_volume *vol = NTFS_SB(root->d_sb); int i; seq_printf(sf, ",uid=%i", vol->uid); diff --git a/fs/ntfs/inode.h b/fs/ntfs/inode.h index fe8e7e928889..db29695f845c 100644 --- a/fs/ntfs/inode.h +++ b/fs/ntfs/inode.h @@ -298,7 +298,7 @@ extern void ntfs_clear_extent_inode(ntfs_inode *ni); extern int ntfs_read_inode_mount(struct inode *vi); -extern int ntfs_show_options(struct seq_file *sf, struct vfsmount *mnt); +extern int ntfs_show_options(struct seq_file *sf, struct dentry *root); #ifdef NTFS_RW diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index c05ff25c356c..604e12c4e979 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -108,7 +108,7 @@ static int ocfs2_parse_options(struct super_block *sb, char *options, int is_remount); static int ocfs2_check_set_options(struct super_block *sb, struct mount_options *options); -static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); +static int ocfs2_show_options(struct seq_file *s, struct dentry *root); static void ocfs2_put_super(struct super_block *sb); static int ocfs2_mount_volume(struct super_block *sb); static int ocfs2_remount(struct super_block *sb, int *flags, char *data); @@ -1533,9 +1533,9 @@ bail: return status; } -static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) +static int ocfs2_show_options(struct seq_file *s, struct dentry *root) { - struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); + struct ocfs2_super *osb = OCFS2_SB(root->d_sb); unsigned long opts = osb->s_mount_opt; unsigned int local_alloc_megs; @@ -1567,8 +1567,7 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) if (osb->preferred_slot != OCFS2_INVALID_SLOT) seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); - if (!(mnt->mnt_flags & MNT_NOATIME) && !(mnt->mnt_flags & MNT_RELATIME)) - seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); + seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); if (osb->osb_commit_interval) seq_printf(s, ",commit=%u", diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c index 8f8304b3f98a..12412852d88a 100644 --- a/fs/proc_namespace.c +++ b/fs/proc_namespace.c @@ -113,7 +113,7 @@ static int show_vfsmnt(struct seq_file *m, struct vfsmount *mnt) goto out; show_mnt_opts(m, mnt); if (sb->s_op->show_options) - err = sb->s_op->show_options(m, mnt); + err = sb->s_op->show_options(m, mnt_path.dentry); seq_puts(m, " 0 0\n"); out: return err; @@ -174,7 +174,7 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt) if (err) goto out; if (sb->s_op->show_options) - err = sb->s_op->show_options(m, mnt); + err = sb->s_op->show_options(m, mnt->mnt_root); seq_putc(m, '\n'); out: return err; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index d93a3fadf53c..63765d58445b 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -419,9 +419,9 @@ static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; } -static int ubifs_show_options(struct seq_file *s, struct vfsmount *mnt) +static int ubifs_show_options(struct seq_file *s, struct dentry *root) { - struct ubifs_info *c = mnt->mnt_sb->s_fs_info; + struct ubifs_info *c = root->d_sb->s_fs_info; if (c->mount_opts.unmount_mode == 2) seq_printf(s, ",fast_unmount"); diff --git a/fs/udf/super.c b/fs/udf/super.c index c94fc889a486..0c33225647a0 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -89,7 +89,7 @@ static void udf_open_lvid(struct super_block *); static void udf_close_lvid(struct super_block *); static unsigned int udf_count_free(struct super_block *); static int udf_statfs(struct dentry *, struct kstatfs *); -static int udf_show_options(struct seq_file *, struct vfsmount *); +static int udf_show_options(struct seq_file *, struct dentry *); struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi) { @@ -249,9 +249,9 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count) return 0; } -static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int udf_show_options(struct seq_file *seq, struct dentry *root) { - struct super_block *sb = mnt->mnt_sb; + struct super_block *sb = root->d_sb; struct udf_sb_info *sbi = UDF_SB(sb); if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT)) diff --git a/fs/ufs/super.c b/fs/ufs/super.c index d6961eb5b774..5246ee3e5607 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1351,9 +1351,9 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) return 0; } -static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int ufs_show_options(struct seq_file *seq, struct dentry *root) { - struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_sb); + struct ufs_sb_info *sbi = UFS_SB(root->d_sb); unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; const struct match_token *tp = tokens; diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 8a899496fd5f..7b7669507ee3 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1238,9 +1238,9 @@ xfs_fs_unfreeze( STATIC int xfs_fs_show_options( struct seq_file *m, - struct vfsmount *mnt) + struct dentry *root) { - return -xfs_showargs(XFS_M(mnt->mnt_sb), m); + return -xfs_showargs(XFS_M(root->d_sb), m); } /* diff --git a/include/linux/fs.h b/include/linux/fs.h index 13721b073407..cc1021fd19ef 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1672,7 +1672,7 @@ struct super_operations { int (*remount_fs) (struct super_block *, int *, char *); void (*umount_begin) (struct super_block *); - int (*show_options)(struct seq_file *, struct vfsmount *); + int (*show_options)(struct seq_file *, struct dentry *); int (*show_devname)(struct seq_file *, struct dentry *); int (*show_path)(struct seq_file *, struct dentry *); int (*show_stats)(struct seq_file *, struct dentry *); @@ -2592,7 +2592,7 @@ extern void setattr_copy(struct inode *inode, const struct iattr *attr); extern void file_update_time(struct file *file); -extern int generic_show_options(struct seq_file *m, struct vfsmount *mnt); +extern int generic_show_options(struct seq_file *m, struct dentry *root); extern void save_mount_options(struct super_block *sb, char *options); extern void replace_mount_options(struct super_block *sb, char *options); diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 86ebacfd9431..7cab65f83f1d 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1038,9 +1038,9 @@ static int rebind_subsystems(struct cgroupfs_root *root, return 0; } -static int cgroup_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int cgroup_show_options(struct seq_file *seq, struct dentry *dentry) { - struct cgroupfs_root *root = vfs->mnt_sb->s_fs_info; + struct cgroupfs_root *root = dentry->d_sb->s_fs_info; struct cgroup_subsys *ss; mutex_lock(&cgroup_mutex); diff --git a/mm/shmem.c b/mm/shmem.c index 86a19efc36fb..feead1943d92 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2118,9 +2118,9 @@ out: return error; } -static int shmem_show_options(struct seq_file *seq, struct vfsmount *vfs) +static int shmem_show_options(struct seq_file *seq, struct dentry *root) { - struct shmem_sb_info *sbinfo = SHMEM_SB(vfs->mnt_sb); + struct shmem_sb_info *sbinfo = SHMEM_SB(root->d_sb); if (sbinfo->max_blocks != shmem_default_max_blocks()) seq_printf(seq, ",size=%luk", -- cgit v1.2.3 From 474fce067521a40dbacc722e8ba119e81c2d31bf Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 18 Dec 2011 20:00:09 +0000 Subject: xfs: replace i_flock with a sleeping bitlock We almost never block on i_flock, the exception is synchronous inode flushing. Instead of bloating the inode with a 16/24-byte completion that we abuse as a semaphore just implement it as a bitlock that uses a bit waitqueue for the rare sleeping path. This primarily is a tradeoff between a much smaller inode and a faster non-blocking path vs faster wakeups, and we are much better off with the former. A small downside is that we will lose lockdep checking for i_flock, but given that it's always taken inside the ilock that should be acceptable. Note that for example the inode writeback locking is implemented in a very similar way. Signed-off-by: Christoph Hellwig Reviewed-by: Alex Elder Signed-off-by: Ben Myers --- fs/xfs/xfs_iget.c | 20 +++++++++++-- fs/xfs/xfs_inode.c | 4 +-- fs/xfs/xfs_inode.h | 78 +++++++++++++++++++++++++++++++------------------ fs/xfs/xfs_inode_item.c | 4 +-- fs/xfs/xfs_super.c | 7 ----- fs/xfs/xfs_sync.c | 9 +++--- 6 files changed, 76 insertions(+), 46 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index f180ce896cd7..a7cf7139f9ad 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -77,7 +77,7 @@ xfs_inode_alloc( ASSERT(atomic_read(&ip->i_pincount) == 0); ASSERT(!spin_is_locked(&ip->i_flags_lock)); - ASSERT(completion_done(&ip->i_flush)); + ASSERT(!xfs_isiflocked(ip)); ASSERT(ip->i_ino == 0); mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); @@ -150,7 +150,7 @@ xfs_inode_free( /* asserts to verify all state is correct here */ ASSERT(atomic_read(&ip->i_pincount) == 0); ASSERT(!spin_is_locked(&ip->i_flags_lock)); - ASSERT(completion_done(&ip->i_flush)); + ASSERT(!xfs_isiflocked(ip)); /* * Because we use RCU freeing we need to ensure the inode always @@ -713,3 +713,19 @@ xfs_isilocked( return 0; } #endif + +void +__xfs_iflock( + struct xfs_inode *ip) +{ + wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IFLOCK_BIT); + DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IFLOCK_BIT); + + do { + prepare_to_wait_exclusive(wq, &wait.wait, TASK_UNINTERRUPTIBLE); + if (xfs_isiflocked(ip)) + io_schedule(); + } while (!xfs_iflock_nowait(ip)); + + finish_wait(wq, &wait.wait); +} diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 96b29e3286db..eeb60d31b086 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2396,7 +2396,7 @@ xfs_iflush( XFS_STATS_INC(xs_iflush_count); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(!completion_done(&ip->i_flush)); + ASSERT(xfs_isiflocked(ip)); ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE || ip->i_d.di_nextents > XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)); @@ -2512,7 +2512,7 @@ xfs_iflush_int( #endif ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(!completion_done(&ip->i_flush)); + ASSERT(xfs_isiflocked(ip)); ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE || ip->i_d.di_nextents > XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK)); diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index be8dc0c2cf52..960d2a89b3ac 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -237,7 +237,6 @@ typedef struct xfs_inode { struct xfs_inode_log_item *i_itemp; /* logging information */ mrlock_t i_lock; /* inode lock */ mrlock_t i_iolock; /* inode IO lock */ - struct completion i_flush; /* inode flush completion q */ atomic_t i_pincount; /* inode pin count */ wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ spinlock_t i_flags_lock; /* inode i_flags lock */ @@ -324,6 +323,19 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) return ret; } +static inline int +xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) +{ + int ret; + + spin_lock(&ip->i_flags_lock); + ret = ip->i_flags & flags; + if (!ret) + ip->i_flags |= flags; + spin_unlock(&ip->i_flags_lock); + return ret; +} + /* * Project quota id helpers (previously projid was 16bit only * and using two 16bit values to hold new 32bit projid was chosen @@ -343,36 +355,18 @@ xfs_set_projid(struct xfs_inode *ip, ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); } -/* - * Manage the i_flush queue embedded in the inode. This completion - * queue synchronizes processes attempting to flush the in-core - * inode back to disk. - */ -static inline void xfs_iflock(xfs_inode_t *ip) -{ - wait_for_completion(&ip->i_flush); -} - -static inline int xfs_iflock_nowait(xfs_inode_t *ip) -{ - return try_wait_for_completion(&ip->i_flush); -} - -static inline void xfs_ifunlock(xfs_inode_t *ip) -{ - complete(&ip->i_flush); -} - /* * In-core inode flags. */ -#define XFS_IRECLAIM 0x0001 /* started reclaiming this inode */ -#define XFS_ISTALE 0x0002 /* inode has been staled */ -#define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ -#define XFS_INEW 0x0008 /* inode has just been allocated */ -#define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ -#define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ -#define XFS_IDIRTY_RELEASE 0x0040 /* dirty release already seen */ +#define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ +#define XFS_ISTALE (1 << 1) /* inode has been staled */ +#define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ +#define XFS_INEW (1 << 3) /* inode has just been allocated */ +#define XFS_IFILESTREAM (1 << 4) /* inode is in a filestream dir. */ +#define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ +#define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ +#define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ +#define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) /* * Per-lifetime flags need to be reset when re-using a reclaimable inode during @@ -384,6 +378,34 @@ static inline void xfs_ifunlock(xfs_inode_t *ip) XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | \ XFS_IFILESTREAM); +/* + * Synchronize processes attempting to flush the in-core inode back to disk. + */ + +extern void __xfs_iflock(struct xfs_inode *ip); + +static inline int xfs_iflock_nowait(struct xfs_inode *ip) +{ + return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); +} + +static inline void xfs_iflock(struct xfs_inode *ip) +{ + if (!xfs_iflock_nowait(ip)) + __xfs_iflock(ip); +} + +static inline void xfs_ifunlock(struct xfs_inode *ip) +{ + xfs_iflags_clear(ip, XFS_IFLOCK); + wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); +} + +static inline int xfs_isiflocked(struct xfs_inode *ip) +{ + return xfs_iflags_test(ip, XFS_IFLOCK); +} + /* * Flags for inode locking. * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 2b6b4fcef49e..c8d4ce0efd5a 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -717,7 +717,7 @@ xfs_inode_item_pushbuf( * If a flush is not in progress anymore, chances are that the * inode was taken off the AIL. So, just get out. */ - if (completion_done(&ip->i_flush) || + if (!xfs_isiflocked(ip) || !(lip->li_flags & XFS_LI_IN_AIL)) { xfs_iunlock(ip, XFS_ILOCK_SHARED); return true; @@ -750,7 +750,7 @@ xfs_inode_item_push( struct xfs_inode *ip = iip->ili_inode; ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED)); - ASSERT(!completion_done(&ip->i_flush)); + ASSERT(xfs_isiflocked(ip)); /* * Since we were able to lock the inode's flush lock and diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 281961c1d81a..6851fa7b1afa 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -829,13 +829,6 @@ xfs_fs_inode_init_once( atomic_set(&ip->i_pincount, 0); spin_lock_init(&ip->i_flags_lock); init_waitqueue_head(&ip->i_ipin_wait); - /* - * Because we want to use a counting completion, complete - * the flush completion once to allow a single access to - * the flush completion without blocking. - */ - init_completion(&ip->i_flush); - complete(&ip->i_flush); mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, "xfsino", ip->i_ino); diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c index 72c01a1c16e7..40b75eecd2b4 100644 --- a/fs/xfs/xfs_sync.c +++ b/fs/xfs/xfs_sync.c @@ -707,14 +707,13 @@ xfs_reclaim_inode_grab( return 1; /* - * do some unlocked checks first to avoid unnecessary lock traffic. - * The first is a flush lock check, the second is a already in reclaim - * check. Only do these checks if we are not going to block on locks. + * If we are asked for non-blocking operation, do unlocked checks to + * see if the inode already is being flushed or in reclaim to avoid + * lock traffic. */ if ((flags & SYNC_TRYLOCK) && - (!ip->i_flush.done || __xfs_iflags_test(ip, XFS_IRECLAIM))) { + __xfs_iflags_test(ip, XFS_IFLOCK | XFS_IRECLAIM)) return 1; - } /* * The radix tree lock here protects a thread in xfs_iget from racing -- cgit v1.2.3 From f392e6319a4e9a028b0c8b48f000bb01d660ad53 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 18 Dec 2011 20:00:10 +0000 Subject: xfs: replace i_pin_wait with a bit waitqueue Replace i_pin_wait, which is only used during synchronous inode flushing with a bit waitqueue. This trades off a much smaller inode against slightly slower wakeup performance, and saves 12 (32-bit) or 20 (64-bit) bytes in the XFS inode. Reviewed-by: Alex Elder Reviewed-by: Dave Chinner Signed-off-by: Christoph Hellwig Signed-off-by: Ben Myers --- fs/xfs/xfs_inode.c | 27 +++++++++++++++++++++------ fs/xfs/xfs_inode.h | 3 ++- fs/xfs/xfs_inode_item.c | 2 +- fs/xfs/xfs_super.c | 1 - 4 files changed, 24 insertions(+), 9 deletions(-) (limited to 'fs/xfs/xfs_super.c') diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index eeb60d31b086..62603369b523 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2037,7 +2037,7 @@ xfs_idestroy_fork( * once someone is waiting for it to be unpinned. */ static void -xfs_iunpin_nowait( +xfs_iunpin( struct xfs_inode *ip) { ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); @@ -2049,14 +2049,29 @@ xfs_iunpin_nowait( } +static void +__xfs_iunpin_wait( + struct xfs_inode *ip) +{ + wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_IPINNED_BIT); + DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_IPINNED_BIT); + + xfs_iunpin(ip); + + do { + prepare_to_wait(wq, &wait.wait, TASK_UNINTERRUPTIBLE); + if (xfs_ipincount(ip)) + io_schedule(); + } while (xfs_ipincount(ip)); + finish_wait(wq, &wait.wait); +} + void xfs_iunpin_wait( struct xfs_inode *ip) { - if (xfs_ipincount(ip)) { - xfs_iunpin_nowait(ip); - wait_event(ip->i_ipin_wait, (xfs_ipincount(ip) == 0)); - } + if (xfs_ipincount(ip)) + __xfs_iunpin_wait(ip); } /* @@ -2415,7 +2430,7 @@ xfs_iflush( * out for us if they occur after the log force completes. */ if (!(flags & SYNC_WAIT) && xfs_ipincount(ip)) { - xfs_iunpin_nowait(ip); + xfs_iunpin(ip); xfs_ifunlock(ip); return EAGAIN; } diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 960d2a89b3ac..4acbe740be46 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -238,7 +238,6 @@ typedef struct xfs_inode { mrlock_t i_lock; /* inode lock */ mrlock_t i_iolock; /* inode IO lock */ atomic_t i_pincount; /* inode pin count */ - wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ spinlock_t i_flags_lock; /* inode i_flags lock */ /* Miscellaneous state. */ unsigned long i_flags; /* see defined flags below */ @@ -367,6 +366,8 @@ xfs_set_projid(struct xfs_inode *ip, #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ #define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ #define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) +#define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ +#define XFS_IPINNED (1 << __XFS_IPINNED_BIT) /* * Per-lifetime flags need to be reset when re-using a reclaimable inode during diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index c8d4ce0efd5a..91d71dcd4852 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -555,7 +555,7 @@ xfs_inode_item_unpin( trace_xfs_inode_unpin(ip, _RET_IP_); ASSERT(atomic_read(&ip->i_pincount) > 0); if (atomic_dec_and_test(&ip->i_pincount)) - wake_up(&ip->i_ipin_wait); + wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT); } /* diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 6851fa7b1afa..ee5b695c99a7 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -828,7 +828,6 @@ xfs_fs_inode_init_once( /* xfs inode */ atomic_set(&ip->i_pincount, 0); spin_lock_init(&ip->i_flags_lock); - init_waitqueue_head(&ip->i_ipin_wait); mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, "xfsino", ip->i_ino); -- cgit v1.2.3