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-rw-r--r--fs/Kconfig1
-rw-r--r--fs/Kconfig.binfmt4
-rw-r--r--fs/eventpoll.c35
-rw-r--r--fs/exec.c168
-rw-r--r--fs/fcntl.c62
-rw-r--r--fs/fuse/dev.c7
-rw-r--r--fs/isofs/inode.c40
-rw-r--r--fs/lockd/svc.c11
-rw-r--r--fs/lockd/svclock.c6
-rw-r--r--fs/lockd/svcsubs.c9
-rw-r--r--fs/locks.c57
-rw-r--r--fs/nfs/Kconfig1
-rw-r--r--fs/nfsd/Kconfig1
-rw-r--r--fs/nfsd/nfs4state.c26
-rw-r--r--fs/proc/base.c8
-rw-r--r--fs/proc/softirqs.c4
-rw-r--r--fs/proc/stat.c14
-rw-r--r--fs/proc/task_mmu.c6
-rw-r--r--fs/select.c6
19 files changed, 287 insertions, 179 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index b5e582bd769d..97673c955484 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -53,7 +53,6 @@ config EXPORTFS
config FILE_LOCKING
bool "Enable POSIX file locking API" if EMBEDDED
default y
- select BKL # while lockd still uses it.
help
This option enables standard file locking support, required
for filesystems like NFS and for the flock() system
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index bb4cc5b8abc8..79e2ca7973b7 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -42,7 +42,7 @@ config BINFMT_ELF_FDPIC
config CORE_DUMP_DEFAULT_ELF_HEADERS
bool "Write ELF core dumps with partial segments"
- default n
+ default y
depends on BINFMT_ELF && ELF_CORE
help
ELF core dump files describe each memory mapping of the crashed
@@ -60,7 +60,7 @@ config CORE_DUMP_DEFAULT_ELF_HEADERS
inherited. See Documentation/filesystems/proc.txt for details.
This config option changes the default setting of coredump_filter
- seen at boot time. If unsure, say N.
+ seen at boot time. If unsure, say Y.
config BINFMT_FLAT
bool "Kernel support for flat binaries"
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 256bb7bb102a..8cf07242067d 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -77,9 +77,6 @@
/* Maximum number of nesting allowed inside epoll sets */
#define EP_MAX_NESTS 4
-/* Maximum msec timeout value storeable in a long int */
-#define EP_MAX_MSTIMEO min(1000ULL * MAX_SCHEDULE_TIMEOUT / HZ, (LONG_MAX - 999ULL) / HZ)
-
#define EP_MAX_EVENTS (INT_MAX / sizeof(struct epoll_event))
#define EP_UNACTIVE_PTR ((void *) -1L)
@@ -1117,18 +1114,22 @@ static int ep_send_events(struct eventpoll *ep,
static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
int maxevents, long timeout)
{
- int res, eavail;
+ int res, eavail, timed_out = 0;
unsigned long flags;
- long jtimeout;
+ long slack;
wait_queue_t wait;
-
- /*
- * Calculate the timeout by checking for the "infinite" value (-1)
- * and the overflow condition. The passed timeout is in milliseconds,
- * that why (t * HZ) / 1000.
- */
- jtimeout = (timeout < 0 || timeout >= EP_MAX_MSTIMEO) ?
- MAX_SCHEDULE_TIMEOUT : (timeout * HZ + 999) / 1000;
+ struct timespec end_time;
+ ktime_t expires, *to = NULL;
+
+ if (timeout > 0) {
+ ktime_get_ts(&end_time);
+ timespec_add_ns(&end_time, (u64)timeout * NSEC_PER_MSEC);
+ slack = select_estimate_accuracy(&end_time);
+ to = &expires;
+ *to = timespec_to_ktime(end_time);
+ } else if (timeout == 0) {
+ timed_out = 1;
+ }
retry:
spin_lock_irqsave(&ep->lock, flags);
@@ -1150,7 +1151,7 @@ retry:
* to TASK_INTERRUPTIBLE before doing the checks.
*/
set_current_state(TASK_INTERRUPTIBLE);
- if (!list_empty(&ep->rdllist) || !jtimeout)
+ if (!list_empty(&ep->rdllist) || timed_out)
break;
if (signal_pending(current)) {
res = -EINTR;
@@ -1158,7 +1159,9 @@ retry:
}
spin_unlock_irqrestore(&ep->lock, flags);
- jtimeout = schedule_timeout(jtimeout);
+ if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
+ timed_out = 1;
+
spin_lock_irqsave(&ep->lock, flags);
}
__remove_wait_queue(&ep->wq, &wait);
@@ -1176,7 +1179,7 @@ retry:
* more luck.
*/
if (!res && eavail &&
- !(res = ep_send_events(ep, events, maxevents)) && jtimeout)
+ !(res = ep_send_events(ep, events, maxevents)) && !timed_out)
goto retry;
return res;
diff --git a/fs/exec.c b/fs/exec.c
index 3aa75b8888a1..99d33a1371e9 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -66,6 +66,12 @@ char core_pattern[CORENAME_MAX_SIZE] = "core";
unsigned int core_pipe_limit;
int suid_dumpable = 0;
+struct core_name {
+ char *corename;
+ int used, size;
+};
+static atomic_t call_count = ATOMIC_INIT(1);
+
/* The maximal length of core_pattern is also specified in sysctl.c */
static LIST_HEAD(formats);
@@ -1003,7 +1009,7 @@ int flush_old_exec(struct linux_binprm * bprm)
bprm->mm = NULL; /* We're using it now */
- current->flags &= ~PF_RANDOMIZE;
+ current->flags &= ~(PF_RANDOMIZE | PF_KTHREAD);
flush_thread();
current->personality &= ~bprm->per_clear;
@@ -1083,14 +1089,14 @@ EXPORT_SYMBOL(setup_new_exec);
*/
int prepare_bprm_creds(struct linux_binprm *bprm)
{
- if (mutex_lock_interruptible(&current->cred_guard_mutex))
+ if (mutex_lock_interruptible(&current->signal->cred_guard_mutex))
return -ERESTARTNOINTR;
bprm->cred = prepare_exec_creds();
if (likely(bprm->cred))
return 0;
- mutex_unlock(&current->cred_guard_mutex);
+ mutex_unlock(&current->signal->cred_guard_mutex);
return -ENOMEM;
}
@@ -1098,7 +1104,7 @@ void free_bprm(struct linux_binprm *bprm)
{
free_arg_pages(bprm);
if (bprm->cred) {
- mutex_unlock(&current->cred_guard_mutex);
+ mutex_unlock(&current->signal->cred_guard_mutex);
abort_creds(bprm->cred);
}
kfree(bprm);
@@ -1119,13 +1125,13 @@ void install_exec_creds(struct linux_binprm *bprm)
* credentials; any time after this it may be unlocked.
*/
security_bprm_committed_creds(bprm);
- mutex_unlock(&current->cred_guard_mutex);
+ mutex_unlock(&current->signal->cred_guard_mutex);
}
EXPORT_SYMBOL(install_exec_creds);
/*
* determine how safe it is to execute the proposed program
- * - the caller must hold current->cred_guard_mutex to protect against
+ * - the caller must hold ->cred_guard_mutex to protect against
* PTRACE_ATTACH
*/
int check_unsafe_exec(struct linux_binprm *bprm)
@@ -1406,7 +1412,6 @@ int do_execve(const char * filename,
if (retval < 0)
goto out;
- current->flags &= ~PF_KTHREAD;
retval = search_binary_handler(bprm,regs);
if (retval < 0)
goto out;
@@ -1459,127 +1464,148 @@ void set_binfmt(struct linux_binfmt *new)
EXPORT_SYMBOL(set_binfmt);
+static int expand_corename(struct core_name *cn)
+{
+ char *old_corename = cn->corename;
+
+ cn->size = CORENAME_MAX_SIZE * atomic_inc_return(&call_count);
+ cn->corename = krealloc(old_corename, cn->size, GFP_KERNEL);
+
+ if (!cn->corename) {
+ kfree(old_corename);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int cn_printf(struct core_name *cn, const char *fmt, ...)
+{
+ char *cur;
+ int need;
+ int ret;
+ va_list arg;
+
+ va_start(arg, fmt);
+ need = vsnprintf(NULL, 0, fmt, arg);
+ va_end(arg);
+
+ if (likely(need < cn->size - cn->used - 1))
+ goto out_printf;
+
+ ret = expand_corename(cn);
+ if (ret)
+ goto expand_fail;
+
+out_printf:
+ cur = cn->corename + cn->used;
+ va_start(arg, fmt);
+ vsnprintf(cur, need + 1, fmt, arg);
+ va_end(arg);
+ cn->used += need;
+ return 0;
+
+expand_fail:
+ return ret;
+}
+
/* format_corename will inspect the pattern parameter, and output a
* name into corename, which must have space for at least
* CORENAME_MAX_SIZE bytes plus one byte for the zero terminator.
*/
-static int format_corename(char *corename, long signr)
+static int format_corename(struct core_name *cn, long signr)
{
const struct cred *cred = current_cred();
const char *pat_ptr = core_pattern;
int ispipe = (*pat_ptr == '|');
- char *out_ptr = corename;
- char *const out_end = corename + CORENAME_MAX_SIZE;
- int rc;
int pid_in_pattern = 0;
+ int err = 0;
+
+ cn->size = CORENAME_MAX_SIZE * atomic_read(&call_count);
+ cn->corename = kmalloc(cn->size, GFP_KERNEL);
+ cn->used = 0;
+
+ if (!cn->corename)
+ return -ENOMEM;
/* Repeat as long as we have more pattern to process and more output
space */
while (*pat_ptr) {
if (*pat_ptr != '%') {
- if (out_ptr == out_end)
+ if (*pat_ptr == 0)
goto out;
- *out_ptr++ = *pat_ptr++;
+ err = cn_printf(cn, "%c", *pat_ptr++);
} else {
switch (*++pat_ptr) {
+ /* single % at the end, drop that */
case 0:
goto out;
/* Double percent, output one percent */
case '%':
- if (out_ptr == out_end)
- goto out;
- *out_ptr++ = '%';
+ err = cn_printf(cn, "%c", '%');
break;
/* pid */
case 'p':
pid_in_pattern = 1;
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", task_tgid_vnr(current));
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%d",
+ task_tgid_vnr(current));
break;
/* uid */
case 'u':
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", cred->uid);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%d", cred->uid);
break;
/* gid */
case 'g':
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", cred->gid);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%d", cred->gid);
break;
/* signal that caused the coredump */
case 's':
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%ld", signr);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%ld", signr);
break;
/* UNIX time of coredump */
case 't': {
struct timeval tv;
do_gettimeofday(&tv);
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%lu", tv.tv_sec);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%lu", tv.tv_sec);
break;
}
/* hostname */
case 'h':
down_read(&uts_sem);
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%s", utsname()->nodename);
+ err = cn_printf(cn, "%s",
+ utsname()->nodename);
up_read(&uts_sem);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
break;
/* executable */
case 'e':
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%s", current->comm);
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%s", current->comm);
break;
/* core limit size */
case 'c':
- rc = snprintf(out_ptr, out_end - out_ptr,
- "%lu", rlimit(RLIMIT_CORE));
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, "%lu",
+ rlimit(RLIMIT_CORE));
break;
default:
break;
}
++pat_ptr;
}
+
+ if (err)
+ return err;
}
+
/* Backward compatibility with core_uses_pid:
*
* If core_pattern does not include a %p (as is the default)
* and core_uses_pid is set, then .%pid will be appended to
* the filename. Do not do this for piped commands. */
if (!ispipe && !pid_in_pattern && core_uses_pid) {
- rc = snprintf(out_ptr, out_end - out_ptr,
- ".%d", task_tgid_vnr(current));
- if (rc > out_end - out_ptr)
- goto out;
- out_ptr += rc;
+ err = cn_printf(cn, ".%d", task_tgid_vnr(current));
+ if (err)
+ return err;
}
out:
- *out_ptr = 0;
return ispipe;
}
@@ -1856,7 +1882,7 @@ static int umh_pipe_setup(struct subprocess_info *info)
void do_coredump(long signr, int exit_code, struct pt_regs *regs)
{
struct core_state core_state;
- char corename[CORENAME_MAX_SIZE + 1];
+ struct core_name cn;
struct mm_struct *mm = current->mm;
struct linux_binfmt * binfmt;
const struct cred *old_cred;
@@ -1911,7 +1937,13 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
*/
clear_thread_flag(TIF_SIGPENDING);
- ispipe = format_corename(corename, signr);
+ ispipe = format_corename(&cn, signr);
+
+ if (ispipe == -ENOMEM) {
+ printk(KERN_WARNING "format_corename failed\n");
+ printk(KERN_WARNING "Aborting core\n");
+ goto fail_corename;
+ }
if (ispipe) {
int dump_count;
@@ -1948,7 +1980,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
goto fail_dropcount;
}
- helper_argv = argv_split(GFP_KERNEL, corename+1, NULL);
+ helper_argv = argv_split(GFP_KERNEL, cn.corename+1, NULL);
if (!helper_argv) {
printk(KERN_WARNING "%s failed to allocate memory\n",
__func__);
@@ -1961,7 +1993,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
argv_free(helper_argv);
if (retval) {
printk(KERN_INFO "Core dump to %s pipe failed\n",
- corename);
+ cn.corename);
goto close_fail;
}
} else {
@@ -1970,7 +2002,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
if (cprm.limit < binfmt->min_coredump)
goto fail_unlock;
- cprm.file = filp_open(corename,
+ cprm.file = filp_open(cn.corename,
O_CREAT | 2 | O_NOFOLLOW | O_LARGEFILE | flag,
0600);
if (IS_ERR(cprm.file))
@@ -2012,6 +2044,8 @@ fail_dropcount:
if (ispipe)
atomic_dec(&core_dump_count);
fail_unlock:
+ kfree(cn.corename);
+fail_corename:
coredump_finish(mm);
revert_creds(old_cred);
fail_creds:
diff --git a/fs/fcntl.c b/fs/fcntl.c
index f8cc34f542c3..ecc8b3954ed6 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -640,7 +640,7 @@ static void fasync_free_rcu(struct rcu_head *head)
* match the state "is the filp on a fasync list".
*
*/
-static int fasync_remove_entry(struct file *filp, struct fasync_struct **fapp)
+int fasync_remove_entry(struct file *filp, struct fasync_struct **fapp)
{
struct fasync_struct *fa, **fp;
int result = 0;
@@ -666,21 +666,31 @@ static int fasync_remove_entry(struct file *filp, struct fasync_struct **fapp)
return result;
}
+struct fasync_struct *fasync_alloc(void)
+{
+ return kmem_cache_alloc(fasync_cache, GFP_KERNEL);
+}
+
/*
- * Add a fasync entry. Return negative on error, positive if
- * added, and zero if did nothing but change an existing one.
+ * NOTE! This can be used only for unused fasync entries:
+ * entries that actually got inserted on the fasync list
+ * need to be released by rcu - see fasync_remove_entry.
+ */
+void fasync_free(struct fasync_struct *new)
+{
+ kmem_cache_free(fasync_cache, new);
+}
+
+/*
+ * Insert a new entry into the fasync list. Return the pointer to the
+ * old one if we didn't use the new one.
*
* NOTE! It is very important that the FASYNC flag always
* match the state "is the filp on a fasync list".
*/
-static int fasync_add_entry(int fd, struct file *filp, struct fasync_struct **fapp)
+struct fasync_struct *fasync_insert_entry(int fd, struct file *filp, struct fasync_struct **fapp, struct fasync_struct *new)
{
- struct fasync_struct *new, *fa, **fp;
- int result = 0;
-
- new = kmem_cache_alloc(fasync_cache, GFP_KERNEL);
- if (!new)
- return -ENOMEM;
+ struct fasync_struct *fa, **fp;
spin_lock(&filp->f_lock);
spin_lock(&fasync_lock);
@@ -691,8 +701,6 @@ static int fasync_add_entry(int fd, struct file *filp, struct fasync_struct **fa
spin_lock_irq(&fa->fa_lock);
fa->fa_fd = fd;
spin_unlock_irq(&fa->fa_lock);
-
- kmem_cache_free(fasync_cache, new);
goto out;
}
@@ -702,13 +710,39 @@ static int fasync_add_entry(int fd, struct file *filp, struct fasync_struct **fa
new->fa_fd = fd;
new->fa_next = *fapp;
rcu_assign_pointer(*fapp, new);
- result = 1;
filp->f_flags |= FASYNC;
out:
spin_unlock(&fasync_lock);
spin_unlock(&filp->f_lock);
- return result;
+ return fa;
+}
+
+/*
+ * Add a fasync entry. Return negative on error, positive if
+ * added, and zero if did nothing but change an existing one.
+ */
+static int fasync_add_entry(int fd, struct file *filp, struct fasync_struct **fapp)
+{
+ struct fasync_struct *new;
+
+ new = fasync_alloc();
+ if (!new)
+ return -ENOMEM;
+
+ /*
+ * fasync_insert_entry() returns the old (update) entry if
+ * it existed.
+ *
+ * So free the (unused) new entry and return 0 to let the
+ * caller know that we didn't add any new fasync entries.
+ */
+ if (fasync_insert_entry(fd, filp, fapp, new)) {
+ fasync_free(new);
+ return 0;
+ }
+
+ return 1;
}
/*
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index b98664275f02..6e07696308dc 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1334,12 +1334,7 @@ out_finish:
static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_req *req)
{
- int i;
-
- for (i = 0; i < req->num_pages; i++) {
- struct page *page = req->pages[i];
- page_cache_release(page);
- }
+ release_pages(req->pages, req->num_pages, 0);
}
static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode,
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 60c2b944d762..79cf7f616bbe 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -544,6 +544,34 @@ static unsigned int isofs_get_last_session(struct super_block *sb, s32 session)
}
/*
+ * Check if root directory is empty (has less than 3 files).
+ *
+ * Used to detect broken CDs where ISO root directory is empty but Joliet root
+ * directory is OK. If such CD has Rock Ridge extensions, they will be disabled
+ * (and Joliet used instead) or else no files would be visible.
+ */
+static bool rootdir_empty(struct super_block *sb, unsigned long block)
+{
+ int offset = 0, files = 0, de_len;
+ struct iso_directory_record *de;
+ struct buffer_head *bh;
+
+ bh = sb_bread(sb, block);
+ if (!bh)
+ return true;
+ while (files < 3) {
+ de = (struct iso_directory_record *) (bh->b_data + offset);
+ de_len = *(unsigned char *) de;
+ if (de_len == 0)
+ break;
+ files++;
+ offset += de_len;
+ }
+ brelse(bh);
+ return files < 3;
+}
+
+/*
* Initialize the superblock and read the root inode.
*
* Note: a check_disk_change() has been done immediately prior
@@ -843,6 +871,18 @@ root_found:
goto out_no_root;
/*
+ * Fix for broken CDs with Rock Ridge and empty ISO root directory but
+ * correct Joliet root directory.
+ */
+ if (sbi->s_rock == 1 && joliet_level &&
+ rootdir_empty(s, sbi->s_firstdatazone)) {
+ printk(KERN_NOTICE
+ "ISOFS: primary root directory is empty. "
+ "Disabling Rock Ridge and switching to Joliet.");
+ sbi->s_rock = 0;
+ }
+
+ /*
* If this disk has both Rock Ridge and Joliet on it, then we
* want to use Rock Ridge by default. This can be overridden
* by using the norock mount option. There is still one other
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index b13aabc12298..abfff9d7979d 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -22,7 +22,6 @@
#include <linux/in.h>
#include <linux/uio.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
@@ -130,15 +129,6 @@ lockd(void *vrqstp)
dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n");
- /*
- * FIXME: it would be nice if lockd didn't spend its entire life
- * running under the BKL. At the very least, it would be good to
- * have someone clarify what it's intended to protect here. I've
- * seen some handwavy posts about posix locking needing to be
- * done under the BKL, but it's far from clear.
- */
- lock_kernel();
-
if (!nlm_timeout)
nlm_timeout = LOCKD_DFLT_TIMEO;
nlmsvc_timeout = nlm_timeout * HZ;
@@ -195,7 +185,6 @@ lockd(void *vrqstp)
if (nlmsvc_ops)
nlmsvc_invalidate_all();
nlm_shutdown_hosts();
- unlock_kernel();
return 0;
}
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 6f1ef000975a..c462d346acbd 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -700,14 +700,16 @@ nlmsvc_notify_blocked(struct file_lock *fl)
struct nlm_block *block;
dprintk("lockd: VFS unblock notification for block %p\n", fl);
+ spin_lock(&nlm_blocked_lock);
list_for_each_entry(block, &nlm_blocked, b_list) {
if (nlm_compare_locks(&block->b_call->a_args.lock.fl, fl)) {
- nlmsvc_insert_block(block, 0);
+ nlmsvc_insert_block_locked(block, 0);
+ spin_unlock(&nlm_blocked_lock);
svc_wake_up(block->b_daemon);
return;
}
}
-
+ spin_unlock(&nlm_blocked_lock);
printk(KERN_WARNING "lockd: notification for unknown block!\n");
}
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index d0ef94cfb3da..1ca0679c80bf 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -170,6 +170,7 @@ nlm_traverse_locks(struct nlm_host *host, struct nlm_file *file,
again:
file->f_locks = 0;
+ lock_flocks(); /* protects i_flock list */
for (fl = inode->i_flock; fl; fl = fl->fl_next) {
if (fl->fl_lmops != &nlmsvc_lock_operations)
continue;
@@ -181,6 +182,7 @@ again:
if (match(lockhost, host)) {
struct file_lock lock = *fl;
+ unlock_flocks();
lock.fl_type = F_UNLCK;
lock.fl_start = 0;
lock.fl_end = OFFSET_MAX;
@@ -192,6 +194,7 @@ again:
goto again;
}
}
+ unlock_flocks();
return 0;
}
@@ -226,10 +229,14 @@ nlm_file_inuse(struct nlm_file *file)
if (file->f_count || !list_empty(&file->f_blocks) || file->f_shares)
return 1;
+ lock_flocks();
for (fl = inode->i_flock; fl; fl = fl->fl_next) {
- if (fl->fl_lmops == &nlmsvc_lock_operations)
+ if (fl->fl_lmops == &nlmsvc_lock_operations) {
+ unlock_flocks();
return 1;
+ }
}
+ unlock_flocks();
file->f_locks = 0;
return 0;
}
diff --git a/fs/locks.c b/fs/locks.c
index 4de3a2666810..50ec15927aab 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -142,6 +142,7 @@ int lease_break_time = 45;
static LIST_HEAD(file_lock_list);
static LIST_HEAD(blocked_list);
+static DEFINE_SPINLOCK(file_lock_lock);
/*
* Protects the two list heads above, plus the inode->i_flock list
@@ -149,23 +150,24 @@ static LIST_HEAD(blocked_list);
*/
void lock_flocks(void)
{
- lock_kernel();
+ spin_lock(&file_lock_lock);
}
EXPORT_SYMBOL_GPL(lock_flocks);
void unlock_flocks(void)
{
- unlock_kernel();
+ spin_unlock(&file_lock_lock);
}
EXPORT_SYMBOL_GPL(unlock_flocks);
static struct kmem_cache *filelock_cache __read_mostly;
/* Allocate an empty lock structure. */
-static struct file_lock *locks_alloc_lock(void)
+struct file_lock *locks_alloc_lock(void)
{
return kmem_cache_alloc(filelock_cache, GFP_KERNEL);
}
+EXPORT_SYMBOL_GPL(locks_alloc_lock);
void locks_release_private(struct file_lock *fl)
{
@@ -1365,7 +1367,6 @@ int fcntl_getlease(struct file *filp)
int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
{
struct file_lock *fl, **before, **my_before = NULL, *lease;
- struct file_lock *new_fl = NULL;
struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
int error, rdlease_count = 0, wrlease_count = 0;
@@ -1385,11 +1386,6 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
lease = *flp;
if (arg != F_UNLCK) {
- error = -ENOMEM;
- new_fl = locks_alloc_lock();
- if (new_fl == NULL)
- goto out;
-
error = -EAGAIN;
if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
goto out;
@@ -1434,7 +1430,6 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
goto out;
}
- error = 0;
if (arg == F_UNLCK)
goto out;
@@ -1442,15 +1437,11 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
if (!leases_enable)
goto out;
- locks_copy_lock(new_fl, lease);
- locks_insert_lock(before, new_fl);
-
- *flp = new_fl;
+ locks_insert_lock(before, lease);
return 0;
out:
- if (new_fl != NULL)
- locks_free_lock(new_fl);
+ locks_free_lock(lease);
return error;
}
EXPORT_SYMBOL(generic_setlease);
@@ -1514,26 +1505,38 @@ EXPORT_SYMBOL_GPL(vfs_setlease);
*/
int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
{
- struct file_lock fl, *flp = &fl;
+ struct file_lock *fl;
+ struct fasync_struct *new;
struct inode *inode = filp->f_path.dentry->d_inode;
int error;
- locks_init_lock(&fl);
- error = lease_init(filp, arg, &fl);
- if (error)
- return error;
+ fl = lease_alloc(filp, arg);
+ if (IS_ERR(fl))
+ return PTR_ERR(fl);
+ new = fasync_alloc();
+ if (!new) {
+ locks_free_lock(fl);
+ return -ENOMEM;
+ }
lock_flocks();
-
- error = __vfs_setlease(filp, arg, &flp);
+ error = __vfs_setlease(filp, arg, &fl);
if (error || arg == F_UNLCK)
goto out_unlock;
- error = fasync_helper(fd, filp, 1, &flp->fl_fasync);
+ /*
+ * fasync_insert_entry() returns the old entry if any.
+ * If there was no old entry, then it used 'new' and
+ * inserted it into the fasync list. Clear new so that
+ * we don't release it here.
+ */
+ if (!fasync_insert_entry(fd, filp, &fl->fl_fasync, new))
+ new = NULL;
+
if (error < 0) {
/* remove lease just inserted by setlease */
- flp->fl_type = F_UNLCK | F_INPROGRESS;
- flp->fl_break_time = jiffies - 10;
+ fl->fl_type = F_UNLCK | F_INPROGRESS;
+ fl->fl_break_time = jiffies - 10;
time_out_leases(inode);
goto out_unlock;
}
@@ -1541,6 +1544,8 @@ int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
error = __f_setown(filp, task_pid(current), PIDTYPE_PID, 0);
out_unlock:
unlock_flocks();
+ if (new)
+ fasync_free(new);
return error;
}
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index fd667652c502..ba306658a6db 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -1,7 +1,6 @@
config NFS_FS
tristate "NFS client support"
depends on INET && FILE_LOCKING
- depends on BKL # fix as soon as lockd is done
select LOCKD
select SUNRPC
select NFS_ACL_SUPPORT if NFS_V3_ACL
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 31a78fce4732..18b3e8975fe0 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -2,7 +2,6 @@ config NFSD
tristate "NFS server support"
depends on INET
depends on FILE_LOCKING
- depends on BKL # fix as soon as lockd is done
select LOCKD
select SUNRPC
select EXPORTFS
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9019e8ec9dc8..56347e0ac88d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2614,7 +2614,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
struct nfs4_delegation *dp;
struct nfs4_stateowner *sop = stp->st_stateowner;
int cb_up = atomic_read(&sop->so_client->cl_cb_set);
- struct file_lock fl, *flp = &fl;
+ struct file_lock *fl;
int status, flag = 0;
flag = NFS4_OPEN_DELEGATE_NONE;
@@ -2648,20 +2648,24 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
flag = NFS4_OPEN_DELEGATE_NONE;
goto out;
}
- locks_init_lock(&fl);
- fl.fl_lmops = &nfsd_lease_mng_ops;
- fl.fl_flags = FL_LEASE;
- fl.fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
- fl.fl_end = OFFSET_MAX;
- fl.fl_owner = (fl_owner_t)dp;
- fl.fl_file = find_readable_file(stp->st_file);
- BUG_ON(!fl.fl_file);
- fl.fl_pid = current->tgid;
+ status = -ENOMEM;
+ fl = locks_alloc_lock();
+ if (!fl)
+ goto out;
+ locks_init_lock(fl);
+ fl->fl_lmops = &nfsd_lease_mng_ops;
+ fl->fl_flags = FL_LEASE;
+ fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
+ fl->fl_end = OFFSET_MAX;
+ fl->fl_owner = (fl_owner_t)dp;
+ fl->fl_file = find_readable_file(stp->st_file);
+ BUG_ON(!fl->fl_file);
+ fl->fl_pid = current->tgid;
/* vfs_setlease checks to see if delegation should be handed out.
* the lock_manager callbacks fl_mylease and fl_change are used
*/
- if ((status = vfs_setlease(fl.fl_file, fl.fl_type, &flp))) {
+ if ((status = vfs_setlease(fl->fl_file, fl->fl_type, &fl))) {
dprintk("NFSD: setlease failed [%d], no delegation\n", status);
unhash_delegation(dp);
flag = NFS4_OPEN_DELEGATE_NONE;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 9b094c1c8465..f3d02ca461ec 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -226,7 +226,7 @@ struct mm_struct *mm_for_maps(struct task_struct *task)
{
struct mm_struct *mm;
- if (mutex_lock_killable(&task->cred_guard_mutex))
+ if (mutex_lock_killable(&task->signal->cred_guard_mutex))
return NULL;
mm = get_task_mm(task);
@@ -235,7 +235,7 @@ struct mm_struct *mm_for_maps(struct task_struct *task)
mmput(mm);
mm = NULL;
}
- mutex_unlock(&task->cred_guard_mutex);
+ mutex_unlock(&task->signal->cred_guard_mutex);
return mm;
}
@@ -2354,14 +2354,14 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
goto out_free;
/* Guard against adverse ptrace interaction */
- length = mutex_lock_interruptible(&task->cred_guard_mutex);
+ length = mutex_lock_interruptible(&task->signal->cred_guard_mutex);
if (length < 0)
goto out_free;
length = security_setprocattr(task,
(char*)file->f_path.dentry->d_name.name,
(void*)page, count);
- mutex_unlock(&task->cred_guard_mutex);
+ mutex_unlock(&task->signal->cred_guard_mutex);
out_free:
free_page((unsigned long) page);
out:
diff --git a/fs/proc/softirqs.c b/fs/proc/softirqs.c
index 1807c2419f17..37994737c983 100644
--- a/fs/proc/softirqs.c
+++ b/fs/proc/softirqs.c
@@ -10,13 +10,13 @@ static int show_softirqs(struct seq_file *p, void *v)
{
int i, j;
- seq_printf(p, " ");
+ seq_printf(p, " ");
for_each_possible_cpu(i)
seq_printf(p, "CPU%-8d", i);
seq_printf(p, "\n");
for (i = 0; i < NR_SOFTIRQS; i++) {
- seq_printf(p, "%8s:", softirq_to_name[i]);
+ seq_printf(p, "%12s:", softirq_to_name[i]);
for_each_possible_cpu(j)
seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
seq_printf(p, "\n");
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index bf31b03fc275..e15a19c93bae 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -31,7 +31,6 @@ static int show_stat(struct seq_file *p, void *v)
u64 sum_softirq = 0;
unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
struct timespec boottime;
- unsigned int per_irq_sum;
user = nice = system = idle = iowait =
irq = softirq = steal = cputime64_zero;
@@ -52,9 +51,7 @@ static int show_stat(struct seq_file *p, void *v)
guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
guest_nice = cputime64_add(guest_nice,
kstat_cpu(i).cpustat.guest_nice);
- for_each_irq_nr(j) {
- sum += kstat_irqs_cpu(j, i);
- }
+ sum += kstat_cpu_irqs_sum(i);
sum += arch_irq_stat_cpu(i);
for (j = 0; j < NR_SOFTIRQS; j++) {
@@ -110,13 +107,8 @@ static int show_stat(struct seq_file *p, void *v)
seq_printf(p, "intr %llu", (unsigned long long)sum);
/* sum again ? it could be updated? */
- for_each_irq_nr(j) {
- per_irq_sum = 0;
- for_each_possible_cpu(i)
- per_irq_sum += kstat_irqs_cpu(j, i);
-
- seq_printf(p, " %u", per_irq_sum);
- }
+ for_each_irq_nr(j)
+ seq_printf(p, " %u", kstat_irqs(j));
seq_printf(p,
"\nctxt %llu\n"
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 871e25ed0069..da6b01d70f01 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -327,6 +327,7 @@ struct mem_size_stats {
unsigned long private_clean;
unsigned long private_dirty;
unsigned long referenced;
+ unsigned long anonymous;
unsigned long swap;
u64 pss;
};
@@ -357,6 +358,9 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
if (!page)
continue;
+ if (PageAnon(page))
+ mss->anonymous += PAGE_SIZE;
+
mss->resident += PAGE_SIZE;
/* Accumulate the size in pages that have been accessed. */
if (pte_young(ptent) || PageReferenced(page))
@@ -410,6 +414,7 @@ static int show_smap(struct seq_file *m, void *v)
"Private_Clean: %8lu kB\n"
"Private_Dirty: %8lu kB\n"
"Referenced: %8lu kB\n"
+ "Anonymous: %8lu kB\n"
"Swap: %8lu kB\n"
"KernelPageSize: %8lu kB\n"
"MMUPageSize: %8lu kB\n",
@@ -421,6 +426,7 @@ static int show_smap(struct seq_file *m, void *v)
mss.private_clean >> 10,
mss.private_dirty >> 10,
mss.referenced >> 10,
+ mss.anonymous >> 10,
mss.swap >> 10,
vma_kernel_pagesize(vma) >> 10,
vma_mmu_pagesize(vma) >> 10);
diff --git a/fs/select.c b/fs/select.c
index 500a669f7790..b7b10aa30861 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -67,7 +67,7 @@ static long __estimate_accuracy(struct timespec *tv)
return slack;
}
-static long estimate_accuracy(struct timespec *tv)
+long select_estimate_accuracy(struct timespec *tv)
{
unsigned long ret;
struct timespec now;
@@ -417,7 +417,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
}
if (end_time && !timed_out)
- slack = estimate_accuracy(end_time);
+ slack = select_estimate_accuracy(end_time);
retval = 0;
for (;;) {
@@ -769,7 +769,7 @@ static int do_poll(unsigned int nfds, struct poll_list *list,
}
if (end_time && !timed_out)
- slack = estimate_accuracy(end_time);
+ slack = select_estimate_accuracy(end_time);
for (;;) {
struct poll_list *walk;
generated by cgit v1.2.3 (git 2.0.4) at 2025-12-13 11:02:28 +0000