diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-19 23:08:03 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-19 23:08:03 (GMT) |
commit | d2ffb0103aaefa9b169da042cf39ce27bfb6cdbb (patch) | |
tree | 967273cfc51bf649cf5f9f4f4ad0cf0be4b633fc | |
parent | 7fadce0d60d09427e0027d3d468781b08ca0b3d1 (diff) | |
parent | b92ae139c308c5223521ed6ec022148b81312809 (diff) | |
download | linux-d2ffb0103aaefa9b169da042cf39ce27bfb6cdbb.tar.xz |
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
"20 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
rapidio/rio_cm: avoid GFP_KERNEL in atomic context
Revert "ocfs2: bump up o2cb network protocol version"
ocfs2: fix start offset to ocfs2_zero_range_for_truncate()
cgroup: duplicate cgroup reference when cloning sockets
mm: memcontrol: make per-cpu charge cache IRQ-safe for socket accounting
ocfs2: fix double unlock in case retry after free truncate log
fanotify: fix list corruption in fanotify_get_response()
fsnotify: add a way to stop queueing events on group shutdown
ocfs2: fix trans extend while free cached blocks
ocfs2: fix trans extend while flush truncate log
ipc/shm: fix crash if CONFIG_SHMEM is not set
mm: fix the page_swap_info() BUG_ON check
autofs: use dentry flags to block walks during expire
MAINTAINERS: update email for VLYNQ bus entry
mm: avoid endless recursion in dump_page()
mm, thp: fix leaking mapped pte in __collapse_huge_page_swapin()
khugepaged: fix use-after-free in collapse_huge_page()
MAINTAINERS: Maik has moved
ocfs2/dlm: fix race between convert and migration
mem-hotplug: don't clear the only node in new_node_page()
-rw-r--r-- | MAINTAINERS | 4 | ||||
-rw-r--r-- | drivers/rapidio/rio_cm.c | 19 | ||||
-rw-r--r-- | fs/autofs4/expire.c | 55 | ||||
-rw-r--r-- | fs/notify/fanotify/fanotify.c | 13 | ||||
-rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 36 | ||||
-rw-r--r-- | fs/notify/group.c | 19 | ||||
-rw-r--r-- | fs/notify/notification.c | 23 | ||||
-rw-r--r-- | fs/ocfs2/alloc.c | 56 | ||||
-rw-r--r-- | fs/ocfs2/cluster/tcp_internal.h | 5 | ||||
-rw-r--r-- | fs/ocfs2/dlm/dlmconvert.c | 12 | ||||
-rw-r--r-- | fs/ocfs2/file.c | 34 | ||||
-rw-r--r-- | fs/ocfs2/suballoc.c | 14 | ||||
-rw-r--r-- | fs/ramfs/file-mmu.c | 9 | ||||
-rw-r--r-- | include/linux/fsnotify_backend.h | 6 | ||||
-rw-r--r-- | kernel/cgroup.c | 6 | ||||
-rw-r--r-- | mm/debug.c | 6 | ||||
-rw-r--r-- | mm/khugepaged.c | 25 | ||||
-rw-r--r-- | mm/memcontrol.c | 31 | ||||
-rw-r--r-- | mm/memory_hotplug.c | 4 | ||||
-rw-r--r-- | mm/page_io.c | 3 | ||||
-rw-r--r-- | mm/swapfile.c | 1 | ||||
-rw-r--r-- | net/core/sock.c | 5 |
22 files changed, 240 insertions, 146 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 644ff65..a0ce40f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6103,7 +6103,7 @@ S: Supported F: drivers/cpufreq/intel_pstate.c INTEL FRAMEBUFFER DRIVER (excluding 810 and 815) -M: Maik Broemme <mbroemme@plusserver.de> +M: Maik Broemme <mbroemme@libmpq.org> L: linux-fbdev@vger.kernel.org S: Maintained F: Documentation/fb/intelfb.txt @@ -12569,7 +12569,7 @@ F: include/linux/if_*vlan.h F: net/8021q/ VLYNQ BUS -M: Florian Fainelli <florian@openwrt.org> +M: Florian Fainelli <f.fainelli@gmail.com> L: openwrt-devel@lists.openwrt.org (subscribers-only) S: Maintained F: drivers/vlynq/vlynq.c diff --git a/drivers/rapidio/rio_cm.c b/drivers/rapidio/rio_cm.c index 3fa17ac..cebc296 100644 --- a/drivers/rapidio/rio_cm.c +++ b/drivers/rapidio/rio_cm.c @@ -2247,17 +2247,30 @@ static int rio_cm_shutdown(struct notifier_block *nb, unsigned long code, { struct rio_channel *ch; unsigned int i; + LIST_HEAD(list); riocm_debug(EXIT, "."); + /* + * If there are any channels left in connected state send + * close notification to the connection partner. + * First build a list of channels that require a closing + * notification because function riocm_send_close() should + * be called outside of spinlock protected code. + */ spin_lock_bh(&idr_lock); idr_for_each_entry(&ch_idr, ch, i) { - riocm_debug(EXIT, "close ch %d", ch->id); - if (ch->state == RIO_CM_CONNECTED) - riocm_send_close(ch); + if (ch->state == RIO_CM_CONNECTED) { + riocm_debug(EXIT, "close ch %d", ch->id); + idr_remove(&ch_idr, ch->id); + list_add(&ch->ch_node, &list); + } } spin_unlock_bh(&idr_lock); + list_for_each_entry(ch, &list, ch_node) + riocm_send_close(ch); + return NOTIFY_DONE; } diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index b493909..d8e6d42 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -417,6 +417,7 @@ static struct dentry *should_expire(struct dentry *dentry, } return NULL; } + /* * Find an eligible tree to time-out * A tree is eligible if :- @@ -432,6 +433,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb, struct dentry *root = sb->s_root; struct dentry *dentry; struct dentry *expired; + struct dentry *found; struct autofs_info *ino; if (!root) @@ -442,31 +444,46 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb, dentry = NULL; while ((dentry = get_next_positive_subdir(dentry, root))) { + int flags = how; + spin_lock(&sbi->fs_lock); ino = autofs4_dentry_ino(dentry); - if (ino->flags & AUTOFS_INF_WANT_EXPIRE) - expired = NULL; - else - expired = should_expire(dentry, mnt, timeout, how); - if (!expired) { + if (ino->flags & AUTOFS_INF_WANT_EXPIRE) { spin_unlock(&sbi->fs_lock); continue; } + spin_unlock(&sbi->fs_lock); + + expired = should_expire(dentry, mnt, timeout, flags); + if (!expired) + continue; + + spin_lock(&sbi->fs_lock); ino = autofs4_dentry_ino(expired); ino->flags |= AUTOFS_INF_WANT_EXPIRE; spin_unlock(&sbi->fs_lock); synchronize_rcu(); - spin_lock(&sbi->fs_lock); - if (should_expire(expired, mnt, timeout, how)) { - if (expired != dentry) - dput(dentry); - goto found; - } + /* Make sure a reference is not taken on found if + * things have changed. + */ + flags &= ~AUTOFS_EXP_LEAVES; + found = should_expire(expired, mnt, timeout, how); + if (!found || found != expired) + /* Something has changed, continue */ + goto next; + + if (expired != dentry) + dput(dentry); + + spin_lock(&sbi->fs_lock); + goto found; +next: + spin_lock(&sbi->fs_lock); ino->flags &= ~AUTOFS_INF_WANT_EXPIRE; + spin_unlock(&sbi->fs_lock); if (expired != dentry) dput(expired); - spin_unlock(&sbi->fs_lock); } return NULL; @@ -483,6 +500,7 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk) struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb); struct autofs_info *ino = autofs4_dentry_ino(dentry); int status; + int state; /* Block on any pending expire */ if (!(ino->flags & AUTOFS_INF_WANT_EXPIRE)) @@ -490,8 +508,19 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk) if (rcu_walk) return -ECHILD; +retry: spin_lock(&sbi->fs_lock); - if (ino->flags & AUTOFS_INF_EXPIRING) { + state = ino->flags & (AUTOFS_INF_WANT_EXPIRE | AUTOFS_INF_EXPIRING); + if (state == AUTOFS_INF_WANT_EXPIRE) { + spin_unlock(&sbi->fs_lock); + /* + * Possibly being selected for expire, wait until + * it's selected or not. + */ + schedule_timeout_uninterruptible(HZ/10); + goto retry; + } + if (state & AUTOFS_INF_EXPIRING) { spin_unlock(&sbi->fs_lock); pr_debug("waiting for expire %p name=%pd\n", dentry, dentry); diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index d2f97ec..e0e5f7c 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -67,18 +67,7 @@ static int fanotify_get_response(struct fsnotify_group *group, pr_debug("%s: group=%p event=%p\n", __func__, group, event); - wait_event(group->fanotify_data.access_waitq, event->response || - atomic_read(&group->fanotify_data.bypass_perm)); - - if (!event->response) { /* bypass_perm set */ - /* - * Event was canceled because group is being destroyed. Remove - * it from group's event list because we are responsible for - * freeing the permission event. - */ - fsnotify_remove_event(group, &event->fae.fse); - return 0; - } + wait_event(group->fanotify_data.access_waitq, event->response); /* userspace responded, convert to something usable */ switch (event->response) { diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 8e8e6bc..a643138 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -358,16 +358,20 @@ static int fanotify_release(struct inode *ignored, struct file *file) #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS struct fanotify_perm_event_info *event, *next; + struct fsnotify_event *fsn_event; /* - * There may be still new events arriving in the notification queue - * but since userspace cannot use fanotify fd anymore, no event can - * enter or leave access_list by now. + * Stop new events from arriving in the notification queue. since + * userspace cannot use fanotify fd anymore, no event can enter or + * leave access_list by now either. */ - spin_lock(&group->fanotify_data.access_lock); - - atomic_inc(&group->fanotify_data.bypass_perm); + fsnotify_group_stop_queueing(group); + /* + * Process all permission events on access_list and notification queue + * and simulate reply from userspace. + */ + spin_lock(&group->fanotify_data.access_lock); list_for_each_entry_safe(event, next, &group->fanotify_data.access_list, fae.fse.list) { pr_debug("%s: found group=%p event=%p\n", __func__, group, @@ -379,12 +383,21 @@ static int fanotify_release(struct inode *ignored, struct file *file) spin_unlock(&group->fanotify_data.access_lock); /* - * Since bypass_perm is set, newly queued events will not wait for - * access response. Wake up the already sleeping ones now. - * synchronize_srcu() in fsnotify_destroy_group() will wait for all - * processes sleeping in fanotify_handle_event() waiting for access - * response and thus also for all permission events to be freed. + * Destroy all non-permission events. For permission events just + * dequeue them and set the response. They will be freed once the + * response is consumed and fanotify_get_response() returns. */ + mutex_lock(&group->notification_mutex); + while (!fsnotify_notify_queue_is_empty(group)) { + fsn_event = fsnotify_remove_first_event(group); + if (!(fsn_event->mask & FAN_ALL_PERM_EVENTS)) + fsnotify_destroy_event(group, fsn_event); + else + FANOTIFY_PE(fsn_event)->response = FAN_ALLOW; + } + mutex_unlock(&group->notification_mutex); + + /* Response for all permission events it set, wakeup waiters */ wake_up(&group->fanotify_data.access_waitq); #endif @@ -755,7 +768,6 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) spin_lock_init(&group->fanotify_data.access_lock); init_waitqueue_head(&group->fanotify_data.access_waitq); INIT_LIST_HEAD(&group->fanotify_data.access_list); - atomic_set(&group->fanotify_data.bypass_perm, 0); #endif switch (flags & FAN_ALL_CLASS_BITS) { case FAN_CLASS_NOTIF: diff --git a/fs/notify/group.c b/fs/notify/group.c index 3e2dd85..b47f7cf 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -40,6 +40,17 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group) } /* + * Stop queueing new events for this group. Once this function returns + * fsnotify_add_event() will not add any new events to the group's queue. + */ +void fsnotify_group_stop_queueing(struct fsnotify_group *group) +{ + mutex_lock(&group->notification_mutex); + group->shutdown = true; + mutex_unlock(&group->notification_mutex); +} + +/* * Trying to get rid of a group. Remove all marks, flush all events and release * the group reference. * Note that another thread calling fsnotify_clear_marks_by_group() may still @@ -47,6 +58,14 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group) */ void fsnotify_destroy_group(struct fsnotify_group *group) { + /* + * Stop queueing new events. The code below is careful enough to not + * require this but fanotify needs to stop queuing events even before + * fsnotify_destroy_group() is called and this makes the other callers + * of fsnotify_destroy_group() to see the same behavior. + */ + fsnotify_group_stop_queueing(group); + /* clear all inode marks for this group, attach them to destroy_list */ fsnotify_detach_group_marks(group); diff --git a/fs/notify/notification.c b/fs/notify/notification.c index a95d8e0..e455e83 100644 --- a/fs/notify/notification.c +++ b/fs/notify/notification.c @@ -82,7 +82,8 @@ void fsnotify_destroy_event(struct fsnotify_group *group, * Add an event to the group notification queue. The group can later pull this * event off the queue to deal with. The function returns 0 if the event was * added to the queue, 1 if the event was merged with some other queued event, - * 2 if the queue of events has overflown. + * 2 if the event was not queued - either the queue of events has overflown + * or the group is shutting down. */ int fsnotify_add_event(struct fsnotify_group *group, struct fsnotify_event *event, @@ -96,6 +97,11 @@ int fsnotify_add_event(struct fsnotify_group *group, mutex_lock(&group->notification_mutex); + if (group->shutdown) { + mutex_unlock(&group->notification_mutex); + return 2; + } + if (group->q_len >= group->max_events) { ret = 2; /* Queue overflow event only if it isn't already queued */ @@ -126,21 +132,6 @@ queue: } /* - * Remove @event from group's notification queue. It is the responsibility of - * the caller to destroy the event. - */ -void fsnotify_remove_event(struct fsnotify_group *group, - struct fsnotify_event *event) -{ - mutex_lock(&group->notification_mutex); - if (!list_empty(&event->list)) { - list_del_init(&event->list); - group->q_len--; - } - mutex_unlock(&group->notification_mutex); -} - -/* * Remove and return the first event from the notification list. It is the * responsibility of the caller to destroy the obtained event */ diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 7dabbc3..f165f86 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -5922,7 +5922,6 @@ bail: } static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, - handle_t *handle, struct inode *data_alloc_inode, struct buffer_head *data_alloc_bh) { @@ -5935,11 +5934,19 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, struct ocfs2_truncate_log *tl; struct inode *tl_inode = osb->osb_tl_inode; struct buffer_head *tl_bh = osb->osb_tl_bh; + handle_t *handle; di = (struct ocfs2_dinode *) tl_bh->b_data; tl = &di->id2.i_dealloc; i = le16_to_cpu(tl->tl_used) - 1; while (i >= 0) { + handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC); + if (IS_ERR(handle)) { + status = PTR_ERR(handle); + mlog_errno(status); + goto bail; + } + /* Caller has given us at least enough credits to * update the truncate log dinode */ status = ocfs2_journal_access_di(handle, INODE_CACHE(tl_inode), tl_bh, @@ -5974,12 +5981,7 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, } } - status = ocfs2_extend_trans(handle, - OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC); - if (status < 0) { - mlog_errno(status); - goto bail; - } + ocfs2_commit_trans(osb, handle); i--; } @@ -5994,7 +5996,6 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb) { int status; unsigned int num_to_flush; - handle_t *handle; struct inode *tl_inode = osb->osb_tl_inode; struct inode *data_alloc_inode = NULL; struct buffer_head *tl_bh = osb->osb_tl_bh; @@ -6038,21 +6039,11 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb) goto out_mutex; } - handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC); - if (IS_ERR(handle)) { - status = PTR_ERR(handle); - mlog_errno(status); - goto out_unlock; - } - - status = ocfs2_replay_truncate_records(osb, handle, data_alloc_inode, + status = ocfs2_replay_truncate_records(osb, data_alloc_inode, data_alloc_bh); if (status < 0) mlog_errno(status); - ocfs2_commit_trans(osb, handle); - -out_unlock: brelse(data_alloc_bh); ocfs2_inode_unlock(data_alloc_inode, 1); @@ -6413,43 +6404,34 @@ static int ocfs2_free_cached_blocks(struct ocfs2_super *osb, goto out_mutex; } - handle = ocfs2_start_trans(osb, OCFS2_SUBALLOC_FREE); - if (IS_ERR(handle)) { - ret = PTR_ERR(handle); - mlog_errno(ret); - goto out_unlock; - } - while (head) { if (head->free_bg) bg_blkno = head->free_bg; else bg_blkno = ocfs2_which_suballoc_group(head->free_blk, head->free_bit); + handle = ocfs2_start_trans(osb, OCFS2_SUBALLOC_FREE); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + mlog_errno(ret); + goto out_unlock; + } + trace_ocfs2_free_cached_blocks( (unsigned long long)head->free_blk, head->free_bit); ret = ocfs2_free_suballoc_bits(handle, inode, di_bh, head->free_bit, bg_blkno, 1); - if (ret) { + if (ret) mlog_errno(ret); - goto out_journal; - } - ret = ocfs2_extend_trans(handle, OCFS2_SUBALLOC_FREE); - if (ret) { - mlog_errno(ret); - goto out_journal; - } + ocfs2_commit_trans(osb, handle); tmp = head; head = head->free_next; kfree(tmp); } -out_journal: - ocfs2_commit_trans(osb, handle); - out_unlock: ocfs2_inode_unlock(inode, 1); brelse(di_bh); diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h index 94b1836..b95e7df 100644 --- a/fs/ocfs2/cluster/tcp_internal.h +++ b/fs/ocfs2/cluster/tcp_internal.h @@ -44,9 +44,6 @@ * version here in tcp_internal.h should not need to be bumped for * filesystem locking changes. * - * New in version 12 - * - Negotiate hb timeout when storage is down. - * * New in version 11 * - Negotiation of filesystem locking in the dlm join. * @@ -78,7 +75,7 @@ * - full 64 bit i_size in the metadata lock lvbs * - introduction of "rw" lock and pushing meta/data locking down */ -#define O2NET_PROTOCOL_VERSION 12ULL +#define O2NET_PROTOCOL_VERSION 11ULL struct o2net_handshake { __be64 protocol_version; __be64 connector_id; diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c index cdeafb4..0bb1286 100644 --- a/fs/ocfs2/dlm/dlmconvert.c +++ b/fs/ocfs2/dlm/dlmconvert.c @@ -268,7 +268,6 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm, struct dlm_lock *lock, int flags, int type) { enum dlm_status status; - u8 old_owner = res->owner; mlog(0, "type=%d, convert_type=%d, busy=%d\n", lock->ml.type, lock->ml.convert_type, res->state & DLM_LOCK_RES_IN_PROGRESS); @@ -335,7 +334,6 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm, spin_lock(&res->spinlock); res->state &= ~DLM_LOCK_RES_IN_PROGRESS; - lock->convert_pending = 0; /* if it failed, move it back to granted queue. * if master returns DLM_NORMAL and then down before sending ast, * it may have already been moved to granted queue, reset to @@ -344,12 +342,14 @@ enum dlm_status dlmconvert_remote(struct dlm_ctxt *dlm, if (status != DLM_NOTQUEUED) dlm_error(status); dlm_revert_pending_convert(res, lock); - } else if ((res->state & DLM_LOCK_RES_RECOVERING) || - (old_owner != res->owner)) { - mlog(0, "res %.*s is in recovering or has been recovered.\n", - res->lockname.len, res->lockname.name); + } else if (!lock->convert_pending) { + mlog(0, "%s: res %.*s, owner died and lock has been moved back " + "to granted list, retry convert.\n", + dlm->name, res->lockname.len, res->lockname.name); status = DLM_RECOVERING; } + + lock->convert_pending = 0; bail: spin_unlock(&res->spinlock); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 4e7b0dc..0b055bf 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1506,7 +1506,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode, u64 start, u64 len) { int ret = 0; - u64 tmpend, end = start + len; + u64 tmpend = 0; + u64 end = start + len; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); unsigned int csize = osb->s_clustersize; handle_t *handle; @@ -1538,18 +1539,31 @@ static int ocfs2_zero_partial_clusters(struct inode *inode, } /* - * We want to get the byte offset of the end of the 1st cluster. + * If start is on a cluster boundary and end is somewhere in another + * cluster, we have not COWed the cluster starting at start, unless + * end is also within the same cluster. So, in this case, we skip this + * first call to ocfs2_zero_range_for_truncate() truncate and move on + * to the next one. */ - tmpend = (u64)osb->s_clustersize + (start & ~(osb->s_clustersize - 1)); - if (tmpend > end) - tmpend = end; + if ((start & (csize - 1)) != 0) { + /* + * We want to get the byte offset of the end of the 1st + * cluster. + */ + tmpend = (u64)osb->s_clustersize + + (start & ~(osb->s_clustersize - 1)); + if (tmpend > end) + tmpend = end; - trace_ocfs2_zero_partial_clusters_range1((unsigned long long)start, - (unsigned long long)tmpend); + trace_ocfs2_zero_partial_clusters_range1( + (unsigned long long)start, + (unsigned long long)tmpend); - ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend); - if (ret) - mlog_errno(ret); + ret = ocfs2_zero_range_for_truncate(inode, handle, start, + tmpend); + if (ret) + mlog_errno(ret); + } if (tmpend < end) { /* diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index ea47120..6ad3533 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -1199,14 +1199,24 @@ retry: inode_unlock((*ac)->ac_inode); ret = ocfs2_try_to_free_truncate_log(osb, bits_wanted); - if (ret == 1) + if (ret == 1) { + iput((*ac)->ac_inode); + (*ac)->ac_inode = NULL; goto retry; + } if (ret < 0) mlog_errno(ret); inode_lock((*ac)->ac_inode); - ocfs2_inode_lock((*ac)->ac_inode, NULL, 1); + ret = ocfs2_inode_lock((*ac)->ac_inode, NULL, 1); + if (ret < 0) { + mlog_errno(ret); + inode_unlock((*ac)->ac_inode); + iput((*ac)->ac_inode); + (*ac)->ac_inode = NULL; + goto bail; + } } if (status < 0) { if (status != -ENOSPC) diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c index 183a212..12af049 100644 --- a/fs/ramfs/file-mmu.c +++ b/fs/ramfs/file-mmu.c @@ -27,9 +27,17 @@ #include <linux/fs.h> #include <linux/mm.h> #include <linux/ramfs.h> +#include <linux/sched.h> #include "internal.h" +static unsigned long ramfs_mmu_get_unmapped_area(struct file *file, + unsigned long addr, unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + return current->mm->get_unmapped_area(file, addr, len, pgoff, flags); +} + const struct file_operations ramfs_file_operations = { .read_iter = generic_file_read_iter, .write_iter = generic_file_write_iter, @@ -38,6 +46,7 @@ const struct file_operations ramfs_file_operations = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .llseek = generic_file_llseek, + .get_unmapped_area = ramfs_mmu_get_unmapped_area, }; const struct inode_operations ramfs_file_inode_operations = { diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 58205f3..7268ed0 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -148,6 +148,7 @@ struct fsnotify_group { #define FS_PRIO_1 1 /* fanotify content based access control */ #define FS_PRIO_2 2 /* fanotify pre-content access */ unsigned int priority; + bool shutdown; /* group is being shut down, don't queue more events */ /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */ struct mutex mark_mutex; /* protect marks_list */ @@ -179,7 +180,6 @@ struct fsnotify_group { spinlock_t access_lock; struct list_head access_list; wait_queue_head_t access_waitq; - atomic_t bypass_perm; #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ int f_flags; unsigned int max_marks; @@ -292,6 +292,8 @@ extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *op extern void fsnotify_get_group(struct fsnotify_group *group); /* drop reference on a group from fsnotify_alloc_group */ extern void fsnotify_put_group(struct fsnotify_group *group); +/* group destruction begins, stop queuing new events */ +extern void fsnotify_group_stop_queueing(struct fsnotify_group *group); /* destroy group */ extern void fsnotify_destroy_group(struct fsnotify_group *group); /* fasync handler function */ @@ -304,8 +306,6 @@ extern int fsnotify_add_event(struct fsnotify_group *group, struct fsnotify_event *event, int (*merge)(struct list_head *, struct fsnotify_event *)); -/* Remove passed event from groups notification queue */ -extern void fsnotify_remove_event(struct fsnotify_group *group, struct fsnotify_event *event); /* true if the group notification queue is empty */ extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group); /* return, but do not dequeue the first event on the notification queue */ diff --git a/kernel/cgroup.c b/kernel/cgroup.c index d1c51b7..5e8dab5 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -6270,6 +6270,12 @@ void cgroup_sk_alloc(struct sock_cgroup_data *skcd) if (cgroup_sk_alloc_disabled) return; + /* Socket clone path */ + if (skcd->val) { + cgroup_get(sock_cgroup_ptr(skcd)); + return; + } + rcu_read_lock(); while (true) { @@ -42,9 +42,11 @@ const struct trace_print_flags vmaflag_names[] = { void __dump_page(struct page *page, const char *reason) { + int mapcount = PageSlab(page) ? 0 : page_mapcount(page); + pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", - page, page_ref_count(page), page_mapcount(page), - page->mapping, page->index); + page, page_ref_count(page), mapcount, + page->mapping, page_to_pgoff(page)); if (PageCompound(page)) pr_cont(" compound_mapcount: %d", compound_mapcount(page)); pr_cont("\n"); diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 79c52d0..728d779 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -838,7 +838,8 @@ static bool hugepage_vma_check(struct vm_area_struct *vma) * value (scan code). */ -static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address) +static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address, + struct vm_area_struct **vmap) { struct vm_area_struct *vma; unsigned long hstart, hend; @@ -846,7 +847,7 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address) if (unlikely(khugepaged_test_exit(mm))) return SCAN_ANY_PROCESS; - vma = find_vma(mm, address); + *vmap = vma = find_vma(mm, address); if (!vma) return SCAN_VMA_NULL; @@ -881,6 +882,11 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, .pmd = pmd, }; + /* we only decide to swapin, if there is enough young ptes */ + if (referenced < HPAGE_PMD_NR/2) { + trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0); + return false; + } fe.pte = pte_offset_map(pmd, address); for (; fe.address < address + HPAGE_PMD_NR*PAGE_SIZE; fe.pte++, fe.address += PAGE_SIZE) { @@ -888,17 +894,12 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, if (!is_swap_pte(pteval)) continue; swapped_in++; - /* we only decide to swapin, if there is enough young ptes */ - if (referenced < HPAGE_PMD_NR/2) { - trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0); - return false; - } ret = do_swap_page(&fe, pteval); /* do_swap_page returns VM_FAULT_RETRY with released mmap_sem */ if (ret & VM_FAULT_RETRY) { down_read(&mm->mmap_sem); - if (hugepage_vma_revalidate(mm, address)) { + if (hugepage_vma_revalidate(mm, address, &fe.vma)) { /* vma is no longer available, don't continue to swapin */ trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0); return false; @@ -923,7 +924,6 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, static void collapse_huge_page(struct mm_struct *mm, unsigned long address, struct page **hpage, - struct vm_area_struct *vma, int node, int referenced) { pmd_t *pmd, _pmd; @@ -933,6 +933,7 @@ static void collapse_huge_page(struct mm_struct *mm, spinlock_t *pmd_ptl, *pte_ptl; int isolated = 0, result = 0; struct mem_cgroup *memcg; + struct vm_area_struct *vma; unsigned long mmun_start; /* For mmu_notifiers */ unsigned long mmun_end; /* For mmu_notifiers */ gfp_t gfp; @@ -961,7 +962,7 @@ static void collapse_huge_page(struct mm_struct *mm, } down_read(&mm->mmap_sem); - result = hugepage_vma_revalidate(mm, address); + result = hugepage_vma_revalidate(mm, address, &vma); if (result) { mem_cgroup_cancel_charge(new_page, memcg, true); up_read(&mm->mmap_sem); @@ -994,7 +995,7 @@ static void collapse_huge_page(struct mm_struct *mm, * handled by the anon_vma lock + PG_lock. */ down_write(&mm->mmap_sem); - result = hugepage_vma_revalidate(mm, address); + result = hugepage_vma_revalidate(mm, address, &vma); if (result) goto out; /* check if the pmd is still valid */ @@ -1202,7 +1203,7 @@ out_unmap: if (ret) { node = khugepaged_find_target_node(); /* collapse_huge_page will return with the mmap_sem released */ - collapse_huge_page(mm, address, hpage, vma, node, referenced); + collapse_huge_page(mm, address, hpage, node, referenced); } out: trace_mm_khugepaged_scan_pmd(mm, page, writable, referenced, diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 9a6a51a..4be518d 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1740,17 +1740,22 @@ static DEFINE_MUTEX(percpu_charge_mutex); static bool consume_stock(struct mem_cgroup *memcg, unsigned int nr_pages) { struct memcg_stock_pcp *stock; + unsigned long flags; bool ret = false; if (nr_pages > CHARGE_BATCH) return ret; - stock = &get_cpu_var(memcg_stock); + local_irq_save(flags); + + stock = this_cpu_ptr(&memcg_stock); if (memcg == stock->cached && stock->nr_pages >= nr_pages) { stock->nr_pages -= nr_pages; ret = true; } - put_cpu_var(memcg_stock); + + local_irq_restore(flags); + return ret; } @@ -1771,15 +1776,18 @@ static void drain_stock(struct memcg_stock_pcp *stock) stock->cached = NULL; } -/* - * This must be called under preempt disabled or must be called by - * a thread which is pinned to local cpu. - */ static void drain_local_stock(struct work_struct *dummy) { - struct memcg_stock_pcp *stock = this_cpu_ptr(&memcg_stock); + struct memcg_stock_pcp *stock; + unsigned long flags; + + local_irq_save(flags); + + stock = this_cpu_ptr(&memcg_stock); drain_stock(stock); clear_bit(FLUSHING_CACHED_CHARGE, &stock->flags); + + local_irq_restore(flags); } /* @@ -1788,14 +1796,19 @@ static void drain_local_stock(struct work_struct *dummy) */ static void refill_stock(struct mem_cgroup *memcg, unsigned int nr_pages) { - struct memcg_stock_pcp *stock = &get_cpu_var(memcg_stock); + struct memcg_stock_pcp *stock; + unsigned long flags; + + local_irq_save(flags); + stock = this_cpu_ptr(&memcg_stock); if (stock->cached != memcg) { /* reset if necessary */ drain_stock(stock); stock->cached = memcg; } stock->nr_pages += nr_pages; - put_cpu_var(memcg_stock); + + local_irq_restore(flags); } /* diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 41266dc..b58906b 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1567,7 +1567,9 @@ static struct page *new_node_page(struct page *page, unsigned long private, return alloc_huge_page_node(page_hstate(compound_head(page)), next_node_in(nid, nmask)); - node_clear(nid, nmask); + if (nid != next_node_in(nid, nmask)) + node_clear(nid, nmask); + if (PageHighMem(page) || (zone_idx(page_zone(page)) == ZONE_MOVABLE)) gfp_mask |= __GFP_HIGHMEM; diff --git a/mm/page_io.c b/mm/page_io.c index 16bd82fa..eafe5dd 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -264,6 +264,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc, int ret; struct swap_info_struct *sis = page_swap_info(page); + BUG_ON(!PageSwapCache(page)); if (sis->flags & SWP_FILE) { struct kiocb kiocb; struct file *swap_file = sis->swap_file; @@ -337,6 +338,7 @@ int swap_readpage(struct page *page) int ret = 0; struct swap_info_struct *sis = page_swap_info(page); + BUG_ON(!PageSwapCache(page)); VM_BUG_ON_PAGE(!PageLocked(page), page); VM_BUG_ON_PAGE(PageUptodate(page), page); if (frontswap_load(page) == 0) { @@ -386,6 +388,7 @@ int swap_set_page_dirty(struct page *page) if (sis->flags & SWP_FILE) { struct address_space *mapping = sis->swap_file->f_mapping; + BUG_ON(!PageSwapCache(page)); return mapping->a_ops->set_page_dirty(page); } else { return __set_page_dirty_no_writeback(page); diff --git a/mm/swapfile.c b/mm/swapfile.c index 78cfa29..2657acc 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2724,7 +2724,6 @@ int swapcache_prepare(swp_entry_t entry) struct swap_info_struct *page_swap_info(struct page *page) { swp_entry_t swap = { .val = page_private(page) }; - BUG_ON(!PageSwapCache(page)); return swap_info[swp_type(swap)]; } diff --git a/net/core/sock.c b/net/core/sock.c index 25dab8b..fd7b41e 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1362,7 +1362,6 @@ static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority, if (!try_module_get(prot->owner)) goto out_free_sec; sk_tx_queue_clear(sk); - cgroup_sk_alloc(&sk->sk_cgrp_data); } return sk; @@ -1422,6 +1421,7 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority, sock_net_set(sk, net); atomic_set(&sk->sk_wmem_alloc, 1); + cgroup_sk_alloc(&sk->sk_cgrp_data); sock_update_classid(&sk->sk_cgrp_data); sock_update_netprioidx(&sk->sk_cgrp_data); } @@ -1566,6 +1566,9 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority) newsk->sk_priority = 0; newsk->sk_incoming_cpu = raw_smp_processor_id(); atomic64_set(&newsk->sk_cookie, 0); + + cgroup_sk_alloc(&newsk->sk_cgrp_data); + /* * Before updating sk_refcnt, we must commit prior changes to memory * (Documentation/RCU/rculist_nulls.txt for details) |