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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 20:00:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 20:00:06 -0700 |
commit | a05a70db34ba24ca009e1c9cedaef26fd17d5470 (patch) | |
tree | d5d8d0c80293bed52f2103ccc56a9e09117dc983 /fs | |
parent | 03b979dd0323ace8e29a0561cd5232f73a060c09 (diff) | |
parent | 4741526b83c5d3a3d661d1896f9e7414c5730bcb (diff) | |
download | linux-a05a70db34ba24ca009e1c9cedaef26fd17d5470.tar.bz2 |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
- fsnotify fix
- poll() timeout fix
- a few scripts/ tweaks
- debugobjects updates
- the (small) ocfs2 queue
- Minor fixes to kernel/padata.c
- Maybe half of the MM queue
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (117 commits)
mm, page_alloc: restore the original nodemask if the fast path allocation failed
mm, page_alloc: uninline the bad page part of check_new_page()
mm, page_alloc: don't duplicate code in free_pcp_prepare
mm, page_alloc: defer debugging checks of pages allocated from the PCP
mm, page_alloc: defer debugging checks of freed pages until a PCP drain
cpuset: use static key better and convert to new API
mm, page_alloc: inline pageblock lookup in page free fast paths
mm, page_alloc: remove unnecessary variable from free_pcppages_bulk
mm, page_alloc: pull out side effects from free_pages_check
mm, page_alloc: un-inline the bad part of free_pages_check
mm, page_alloc: check multiple page fields with a single branch
mm, page_alloc: remove field from alloc_context
mm, page_alloc: avoid looking up the first zone in a zonelist twice
mm, page_alloc: shortcut watermark checks for order-0 pages
mm, page_alloc: reduce cost of fair zone allocation policy retry
mm, page_alloc: shorten the page allocator fast path
mm, page_alloc: check once if a zone has isolated pageblocks
mm, page_alloc: move __GFP_HARDWALL modifications out of the fastpath
mm, page_alloc: simplify last cpupid reset
mm, page_alloc: remove unnecessary initialisation from __alloc_pages_nodemask()
...
Diffstat (limited to 'fs')
-rw-r--r-- | fs/buffer.c | 10 | ||||
-rw-r--r-- | fs/eventpoll.c | 12 | ||||
-rw-r--r-- | fs/notify/fsnotify.h | 7 | ||||
-rw-r--r-- | fs/notify/group.c | 17 | ||||
-rw-r--r-- | fs/notify/mark.c | 78 | ||||
-rw-r--r-- | fs/ocfs2/alloc.c | 3 | ||||
-rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 5 | ||||
-rw-r--r-- | fs/ocfs2/ocfs2_fs.h | 2 | ||||
-rw-r--r-- | fs/ocfs2/slot_map.c | 6 | ||||
-rw-r--r-- | fs/proc/page.c | 2 | ||||
-rw-r--r-- | fs/select.c | 67 |
11 files changed, 135 insertions, 74 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index af0d9a82a8ed..754813a6962b 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -255,17 +255,17 @@ out: */ static void free_more_memory(void) { - struct zone *zone; + struct zoneref *z; int nid; wakeup_flusher_threads(1024, WB_REASON_FREE_MORE_MEM); yield(); for_each_online_node(nid) { - (void)first_zones_zonelist(node_zonelist(nid, GFP_NOFS), - gfp_zone(GFP_NOFS), NULL, - &zone); - if (zone) + + z = first_zones_zonelist(node_zonelist(nid, GFP_NOFS), + gfp_zone(GFP_NOFS), NULL); + if (z->zone) try_to_free_pages(node_zonelist(nid, GFP_NOFS), 0, GFP_NOFS, NULL); } diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 8a74a2a52e0f..10db91218933 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1583,15 +1583,15 @@ static int ep_send_events(struct eventpoll *ep, return ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, false); } -static inline struct timespec ep_set_mstimeout(long ms) +static inline struct timespec64 ep_set_mstimeout(long ms) { - struct timespec now, ts = { + struct timespec64 now, ts = { .tv_sec = ms / MSEC_PER_SEC, .tv_nsec = NSEC_PER_MSEC * (ms % MSEC_PER_SEC), }; - ktime_get_ts(&now); - return timespec_add_safe(now, ts); + ktime_get_ts64(&now); + return timespec64_add_safe(now, ts); } /** @@ -1621,11 +1621,11 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events, ktime_t expires, *to = NULL; if (timeout > 0) { - struct timespec end_time = ep_set_mstimeout(timeout); + struct timespec64 end_time = ep_set_mstimeout(timeout); slack = select_estimate_accuracy(&end_time); to = &expires; - *to = timespec_to_ktime(end_time); + *to = timespec64_to_ktime(end_time); } else if (timeout == 0) { /* * Avoid the unnecessary trip to the wait queue loop, if the diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h index b44c68a857e7..0a3bc2cf192c 100644 --- a/fs/notify/fsnotify.h +++ b/fs/notify/fsnotify.h @@ -56,6 +56,13 @@ static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks, &mnt->mnt_root->d_lock); } +/* prepare for freeing all marks associated with given group */ +extern void fsnotify_detach_group_marks(struct fsnotify_group *group); +/* + * wait for fsnotify_mark_srcu period to end and free all marks in destroy_list + */ +extern void fsnotify_mark_destroy_list(void); + /* * update the dentry->d_flags of all of inode's children to indicate if inode cares * about events that happen to its children. diff --git a/fs/notify/group.c b/fs/notify/group.c index d16b62cb2854..3e2dd85be5dd 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -47,12 +47,21 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group) */ void fsnotify_destroy_group(struct fsnotify_group *group) { - /* clear all inode marks for this group */ - fsnotify_clear_marks_by_group(group); + /* clear all inode marks for this group, attach them to destroy_list */ + fsnotify_detach_group_marks(group); - synchronize_srcu(&fsnotify_mark_srcu); + /* + * Wait for fsnotify_mark_srcu period to end and free all marks in + * destroy_list + */ + fsnotify_mark_destroy_list(); - /* clear the notification queue of all events */ + /* + * Since we have waited for fsnotify_mark_srcu in + * fsnotify_mark_destroy_list() there can be no outstanding event + * notification against this group. So clearing the notification queue + * of all events is reliable now. + */ fsnotify_flush_notify(group); /* diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 7115c5d7d373..d3fea0bd89e2 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -97,8 +97,8 @@ struct srcu_struct fsnotify_mark_srcu; static DEFINE_SPINLOCK(destroy_lock); static LIST_HEAD(destroy_list); -static void fsnotify_mark_destroy(struct work_struct *work); -static DECLARE_DELAYED_WORK(reaper_work, fsnotify_mark_destroy); +static void fsnotify_mark_destroy_workfn(struct work_struct *work); +static DECLARE_DELAYED_WORK(reaper_work, fsnotify_mark_destroy_workfn); void fsnotify_get_mark(struct fsnotify_mark *mark) { @@ -173,11 +173,15 @@ void fsnotify_detach_mark(struct fsnotify_mark *mark) } /* - * Free fsnotify mark. The freeing is actually happening from a kthread which - * first waits for srcu period end. Caller must have a reference to the mark - * or be protected by fsnotify_mark_srcu. + * Prepare mark for freeing and add it to the list of marks prepared for + * freeing. The actual freeing must happen after SRCU period ends and the + * caller is responsible for this. + * + * The function returns true if the mark was added to the list of marks for + * freeing. The function returns false if someone else has already called + * __fsnotify_free_mark() for the mark. */ -void fsnotify_free_mark(struct fsnotify_mark *mark) +static bool __fsnotify_free_mark(struct fsnotify_mark *mark) { struct fsnotify_group *group = mark->group; @@ -185,17 +189,11 @@ void fsnotify_free_mark(struct fsnotify_mark *mark) /* something else already called this function on this mark */ if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE)) { spin_unlock(&mark->lock); - return; + return false; } mark->flags &= ~FSNOTIFY_MARK_FLAG_ALIVE; spin_unlock(&mark->lock); - spin_lock(&destroy_lock); - list_add(&mark->g_list, &destroy_list); - spin_unlock(&destroy_lock); - queue_delayed_work(system_unbound_wq, &reaper_work, - FSNOTIFY_REAPER_DELAY); - /* * Some groups like to know that marks are being freed. This is a * callback to the group function to let it know that this mark @@ -203,6 +201,25 @@ void fsnotify_free_mark(struct fsnotify_mark *mark) */ if (group->ops->freeing_mark) group->ops->freeing_mark(mark, group); + + spin_lock(&destroy_lock); + list_add(&mark->g_list, &destroy_list); + spin_unlock(&destroy_lock); + + return true; +} + +/* + * Free fsnotify mark. The freeing is actually happening from a workqueue which + * first waits for srcu period end. Caller must have a reference to the mark + * or be protected by fsnotify_mark_srcu. + */ +void fsnotify_free_mark(struct fsnotify_mark *mark) +{ + if (__fsnotify_free_mark(mark)) { + queue_delayed_work(system_unbound_wq, &reaper_work, + FSNOTIFY_REAPER_DELAY); + } } void fsnotify_destroy_mark(struct fsnotify_mark *mark, @@ -468,11 +485,29 @@ void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group, } /* - * Given a group, destroy all of the marks associated with that group. + * Given a group, prepare for freeing all the marks associated with that group. + * The marks are attached to the list of marks prepared for destruction, the + * caller is responsible for freeing marks in that list after SRCU period has + * ended. */ -void fsnotify_clear_marks_by_group(struct fsnotify_group *group) +void fsnotify_detach_group_marks(struct fsnotify_group *group) { - fsnotify_clear_marks_by_group_flags(group, (unsigned int)-1); + struct fsnotify_mark *mark; + + while (1) { + mutex_lock_nested(&group->mark_mutex, SINGLE_DEPTH_NESTING); + if (list_empty(&group->marks_list)) { + mutex_unlock(&group->mark_mutex); + break; + } + mark = list_first_entry(&group->marks_list, + struct fsnotify_mark, g_list); + fsnotify_get_mark(mark); + fsnotify_detach_mark(mark); + mutex_unlock(&group->mark_mutex); + __fsnotify_free_mark(mark); + fsnotify_put_mark(mark); + } } void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old) @@ -499,7 +534,11 @@ void fsnotify_init_mark(struct fsnotify_mark *mark, mark->free_mark = free_mark; } -static void fsnotify_mark_destroy(struct work_struct *work) +/* + * Destroy all marks in destroy_list, waits for SRCU period to finish before + * actually freeing marks. + */ +void fsnotify_mark_destroy_list(void) { struct fsnotify_mark *mark, *next; struct list_head private_destroy_list; @@ -516,3 +555,8 @@ static void fsnotify_mark_destroy(struct work_struct *work) fsnotify_put_mark(mark); } } + +static void fsnotify_mark_destroy_workfn(struct work_struct *work) +{ + fsnotify_mark_destroy_list(); +} diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index e361d1a0ca09..460c0cedab3a 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -5351,7 +5351,7 @@ static int ocfs2_truncate_rec(handle_t *handle, { int ret; u32 left_cpos, rec_range, trunc_range; - int wants_rotate = 0, is_rightmost_tree_rec = 0; + int is_rightmost_tree_rec = 0; struct super_block *sb = ocfs2_metadata_cache_get_super(et->et_ci); struct ocfs2_path *left_path = NULL; struct ocfs2_extent_list *el = path_leaf_el(path); @@ -5457,7 +5457,6 @@ static int ocfs2_truncate_rec(handle_t *handle, memset(rec, 0, sizeof(*rec)); ocfs2_cleanup_merge(el, index); - wants_rotate = 1; next_free = le16_to_cpu(el->l_next_free_rec); if (is_rightmost_tree_rec && next_free > 1) { diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 1934abb6b680..a8d15beee5cb 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -1456,7 +1456,6 @@ static void o2hb_region_release(struct config_item *item) static int o2hb_read_block_input(struct o2hb_region *reg, const char *page, - size_t count, unsigned long *ret_bytes, unsigned int *ret_bits) { @@ -1499,8 +1498,8 @@ static ssize_t o2hb_region_block_bytes_store(struct config_item *item, if (reg->hr_bdev) return -EINVAL; - status = o2hb_read_block_input(reg, page, count, - &block_bytes, &block_bits); + status = o2hb_read_block_input(reg, page, &block_bytes, + &block_bits); if (status) return status; diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index 540ab5b75dbb..44d178b8d1aa 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -580,7 +580,7 @@ struct ocfs2_extended_slot { /*00*/ __u8 es_valid; __u8 es_reserved1[3]; __le32 es_node_num; -/*10*/ +/*08*/ }; /* diff --git a/fs/ocfs2/slot_map.c b/fs/ocfs2/slot_map.c index 1e09592148ad..d7407994f308 100644 --- a/fs/ocfs2/slot_map.c +++ b/fs/ocfs2/slot_map.c @@ -535,12 +535,8 @@ void ocfs2_put_slot(struct ocfs2_super *osb) spin_unlock(&osb->osb_lock); status = ocfs2_update_disk_slot(osb, si, slot_num); - if (status < 0) { + if (status < 0) mlog_errno(status); - goto bail; - } -bail: ocfs2_free_slot_info(osb); } - diff --git a/fs/proc/page.c b/fs/proc/page.c index 712f1b9992cc..3ecd445e830d 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -142,7 +142,7 @@ u64 stable_page_flags(struct page *page) /* - * Caveats on high order pages: page->_count will only be set + * Caveats on high order pages: page->_refcount will only be set * -1 on the head page; SLUB/SLQB do the same for PG_slab; * SLOB won't set PG_slab at all on compound pages. */ diff --git a/fs/select.c b/fs/select.c index 869293988c2a..8ed9da50896a 100644 --- a/fs/select.c +++ b/fs/select.c @@ -47,7 +47,7 @@ #define MAX_SLACK (100 * NSEC_PER_MSEC) -static long __estimate_accuracy(struct timespec *tv) +static long __estimate_accuracy(struct timespec64 *tv) { long slack; int divfactor = 1000; @@ -70,10 +70,10 @@ static long __estimate_accuracy(struct timespec *tv) return slack; } -u64 select_estimate_accuracy(struct timespec *tv) +u64 select_estimate_accuracy(struct timespec64 *tv) { u64 ret; - struct timespec now; + struct timespec64 now; /* * Realtime tasks get a slack of 0 for obvious reasons. @@ -82,8 +82,8 @@ u64 select_estimate_accuracy(struct timespec *tv) if (rt_task(current)) return 0; - ktime_get_ts(&now); - now = timespec_sub(*tv, now); + ktime_get_ts64(&now); + now = timespec64_sub(*tv, now); ret = __estimate_accuracy(&now); if (ret < current->timer_slack_ns) return current->timer_slack_ns; @@ -260,7 +260,7 @@ EXPORT_SYMBOL(poll_schedule_timeout); /** * poll_select_set_timeout - helper function to setup the timeout value - * @to: pointer to timespec variable for the final timeout + * @to: pointer to timespec64 variable for the final timeout * @sec: seconds (from user space) * @nsec: nanoseconds (from user space) * @@ -269,26 +269,28 @@ EXPORT_SYMBOL(poll_schedule_timeout); * * Returns -EINVAL if sec/nsec are not normalized. Otherwise 0. */ -int poll_select_set_timeout(struct timespec *to, long sec, long nsec) +int poll_select_set_timeout(struct timespec64 *to, time64_t sec, long nsec) { - struct timespec ts = {.tv_sec = sec, .tv_nsec = nsec}; + struct timespec64 ts = {.tv_sec = sec, .tv_nsec = nsec}; - if (!timespec_valid(&ts)) + if (!timespec64_valid(&ts)) return -EINVAL; /* Optimize for the zero timeout value here */ if (!sec && !nsec) { to->tv_sec = to->tv_nsec = 0; } else { - ktime_get_ts(to); - *to = timespec_add_safe(*to, ts); + ktime_get_ts64(to); + *to = timespec64_add_safe(*to, ts); } return 0; } -static int poll_select_copy_remaining(struct timespec *end_time, void __user *p, +static int poll_select_copy_remaining(struct timespec64 *end_time, + void __user *p, int timeval, int ret) { + struct timespec64 rts64; struct timespec rts; struct timeval rtv; @@ -302,16 +304,18 @@ static int poll_select_copy_remaining(struct timespec *end_time, void __user *p, if (!end_time->tv_sec && !end_time->tv_nsec) return ret; - ktime_get_ts(&rts); - rts = timespec_sub(*end_time, rts); - if (rts.tv_sec < 0) - rts.tv_sec = rts.tv_nsec = 0; + ktime_get_ts64(&rts64); + rts64 = timespec64_sub(*end_time, rts64); + if (rts64.tv_sec < 0) + rts64.tv_sec = rts64.tv_nsec = 0; + + rts = timespec64_to_timespec(rts64); if (timeval) { if (sizeof(rtv) > sizeof(rtv.tv_sec) + sizeof(rtv.tv_usec)) memset(&rtv, 0, sizeof(rtv)); - rtv.tv_sec = rts.tv_sec; - rtv.tv_usec = rts.tv_nsec / NSEC_PER_USEC; + rtv.tv_sec = rts64.tv_sec; + rtv.tv_usec = rts64.tv_nsec / NSEC_PER_USEC; if (!copy_to_user(p, &rtv, sizeof(rtv))) return ret; @@ -396,7 +400,7 @@ static inline void wait_key_set(poll_table *wait, unsigned long in, wait->_key |= POLLOUT_SET; } -int do_select(int n, fd_set_bits *fds, struct timespec *end_time) +int do_select(int n, fd_set_bits *fds, struct timespec64 *end_time) { ktime_t expire, *to = NULL; struct poll_wqueues table; @@ -522,7 +526,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time) * pointer to the expiry value. */ if (end_time && !to) { - expire = timespec_to_ktime(*end_time); + expire = timespec64_to_ktime(*end_time); to = &expire; } @@ -545,7 +549,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time) * I'm trying ERESTARTNOHAND which restart only when you want to. */ int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp, - fd_set __user *exp, struct timespec *end_time) + fd_set __user *exp, struct timespec64 *end_time) { fd_set_bits fds; void *bits; @@ -622,7 +626,7 @@ out_nofds: SYSCALL_DEFINE5(select, int, n, fd_set __user *, inp, fd_set __user *, outp, fd_set __user *, exp, struct timeval __user *, tvp) { - struct timespec end_time, *to = NULL; + struct timespec64 end_time, *to = NULL; struct timeval tv; int ret; @@ -648,15 +652,17 @@ static long do_pselect(int n, fd_set __user *inp, fd_set __user *outp, const sigset_t __user *sigmask, size_t sigsetsize) { sigset_t ksigmask, sigsaved; - struct timespec ts, end_time, *to = NULL; + struct timespec ts; + struct timespec64 ts64, end_time, *to = NULL; int ret; if (tsp) { if (copy_from_user(&ts, tsp, sizeof(ts))) return -EFAULT; + ts64 = timespec_to_timespec64(ts); to = &end_time; - if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec)) + if (poll_select_set_timeout(to, ts64.tv_sec, ts64.tv_nsec)) return -EINVAL; } @@ -779,7 +785,7 @@ static inline unsigned int do_pollfd(struct pollfd *pollfd, poll_table *pwait, } static int do_poll(struct poll_list *list, struct poll_wqueues *wait, - struct timespec *end_time) + struct timespec64 *end_time) { poll_table* pt = &wait->pt; ktime_t expire, *to = NULL; @@ -854,7 +860,7 @@ static int do_poll(struct poll_list *list, struct poll_wqueues *wait, * pointer to the expiry value. */ if (end_time && !to) { - expire = timespec_to_ktime(*end_time); + expire = timespec64_to_ktime(*end_time); to = &expire; } @@ -868,7 +874,7 @@ static int do_poll(struct poll_list *list, struct poll_wqueues *wait, sizeof(struct pollfd)) int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds, - struct timespec *end_time) + struct timespec64 *end_time) { struct poll_wqueues table; int err = -EFAULT, fdcount, len, size; @@ -936,7 +942,7 @@ static long do_restart_poll(struct restart_block *restart_block) { struct pollfd __user *ufds = restart_block->poll.ufds; int nfds = restart_block->poll.nfds; - struct timespec *to = NULL, end_time; + struct timespec64 *to = NULL, end_time; int ret; if (restart_block->poll.has_timeout) { @@ -957,7 +963,7 @@ static long do_restart_poll(struct restart_block *restart_block) SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, unsigned int, nfds, int, timeout_msecs) { - struct timespec end_time, *to = NULL; + struct timespec64 end_time, *to = NULL; int ret; if (timeout_msecs >= 0) { @@ -993,7 +999,8 @@ SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, unsigned int, nfds, size_t, sigsetsize) { sigset_t ksigmask, sigsaved; - struct timespec ts, end_time, *to = NULL; + struct timespec ts; + struct timespec64 end_time, *to = NULL; int ret; if (tsp) { |