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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-14 03:54:50 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-14 03:54:50 +0200
commitdfe2c6dcc8ca2cdc662d7c0473e9811b72ef3370 (patch)
tree9ed639a08c16322cdf136d576f42df5b97cd1549 /fs
parenta45d572841a24db02a62cf05e1157c35fdd3705b (diff)
parent64e455079e1bd7787cc47be30b7f601ce682a5f6 (diff)
Merge branch 'akpm' (patches from Andrew Morton)
Merge second patch-bomb from Andrew Morton: - a few hotfixes - drivers/dma updates - MAINTAINERS updates - Quite a lot of lib/ updates - checkpatch updates - binfmt updates - autofs4 - drivers/rtc/ - various small tweaks to less used filesystems - ipc/ updates - kernel/watchdog.c changes * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (135 commits) mm: softdirty: enable write notifications on VMAs after VM_SOFTDIRTY cleared kernel/param: consolidate __{start,stop}___param[] in <linux/moduleparam.h> ia64: remove duplicate declarations of __per_cpu_start[] and __per_cpu_end[] frv: remove unused declarations of __start___ex_table and __stop___ex_table kvm: ensure hard lockup detection is disabled by default kernel/watchdog.c: control hard lockup detection default staging: rtl8192u: use %*pEn to escape buffer staging: rtl8192e: use %*pEn to escape buffer staging: wlan-ng: use %*pEhp to print SN lib80211: remove unused print_ssid() wireless: hostap: proc: print properly escaped SSID wireless: ipw2x00: print SSID via %*pE wireless: libertas: print esaped string via %*pE lib/vsprintf: add %*pE[achnops] format specifier lib / string_helpers: introduce string_escape_mem() lib / string_helpers: refactoring the test suite lib / string_helpers: move documentation to c-file include/linux: remove strict_strto* definitions arch/x86/mm/numa.c: fix boot failure when all nodes are hotpluggable fs: check bh blocknr earlier when searching lru ...
Diffstat (limited to 'fs')
-rw-r--r--fs/affs/amigaffs.c2
-rw-r--r--fs/affs/file.c39
-rw-r--r--fs/affs/inode.c3
-rw-r--r--fs/affs/super.c6
-rw-r--r--fs/autofs4/autofs_i.h6
-rw-r--r--fs/autofs4/dev-ioctl.c2
-rw-r--r--fs/autofs4/expire.c210
-rw-r--r--fs/autofs4/root.c62
-rw-r--r--fs/befs/btree.c53
-rw-r--r--fs/binfmt_misc.c23
-rw-r--r--fs/buffer.c4
-rw-r--r--fs/cifs/cifs_dfs_ref.c6
-rw-r--r--fs/cifs/connect.c4
-rw-r--r--fs/coredump.c8
-rw-r--r--fs/fat/misc.c2
-rw-r--r--fs/hfs/hfs_fs.h2
-rw-r--r--fs/isofs/inode.c2
-rw-r--r--fs/ncpfs/dir.c3
-rw-r--r--fs/nilfs2/file.c8
-rw-r--r--fs/nilfs2/inode.c13
-rw-r--r--fs/nilfs2/ioctl.c8
-rw-r--r--fs/nilfs2/nilfs.h14
-rw-r--r--fs/nilfs2/segment.c7
-rw-r--r--fs/nilfs2/super.c6
-rw-r--r--fs/nilfs2/the_nilfs.h22
-rw-r--r--fs/ocfs2/cluster/heartbeat.c2
-rw-r--r--fs/ocfs2/cluster/masklog.c6
-rw-r--r--fs/omfs/inode.c10
-rw-r--r--fs/omfs/omfs_fs.h1
-rw-r--r--fs/proc/task_mmu.c19
-rw-r--r--fs/reiserfs/journal.c8
-rw-r--r--fs/ufs/balloc.c3
32 files changed, 355 insertions, 209 deletions
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 406b29836b19..abc853968fed 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -10,8 +10,6 @@
#include "affs.h"
-extern struct timezone sys_tz;
-
static char ErrorBuffer[256];
/*
diff --git a/fs/affs/file.c b/fs/affs/file.c
index a7fe57d2cd9a..1ed590aafecf 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -584,11 +584,14 @@ affs_extent_file_ofs(struct inode *inode, u32 newsize)
bh->b_state &= ~(1UL << BH_New);
mark_buffer_dirty_inode(bh, inode);
if (prev_bh) {
- u32 tmp = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
- if (tmp)
- affs_warning(sb, "extent_file_ofs", "next block already set for %d (%d)", bidx, tmp);
+ u32 tmp_next = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
+
+ if (tmp_next)
+ affs_warning(sb, "extent_file_ofs",
+ "next block already set for %d (%d)",
+ bidx, tmp_next);
AFFS_DATA_HEAD(prev_bh)->next = cpu_to_be32(bh->b_blocknr);
- affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp);
+ affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp_next);
mark_buffer_dirty_inode(prev_bh, inode);
affs_brelse(prev_bh);
}
@@ -727,11 +730,14 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
AFFS_DATA_HEAD(bh)->next = 0;
bh->b_state &= ~(1UL << BH_New);
if (prev_bh) {
- u32 tmp = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
- if (tmp)
- affs_warning(sb, "commit_write_ofs", "next block already set for %d (%d)", bidx, tmp);
+ u32 tmp_next = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
+
+ if (tmp_next)
+ affs_warning(sb, "commit_write_ofs",
+ "next block already set for %d (%d)",
+ bidx, tmp_next);
AFFS_DATA_HEAD(prev_bh)->next = cpu_to_be32(bh->b_blocknr);
- affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp);
+ affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp_next);
mark_buffer_dirty_inode(prev_bh, inode);
}
}
@@ -758,11 +764,14 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
AFFS_DATA_HEAD(bh)->next = 0;
bh->b_state &= ~(1UL << BH_New);
if (prev_bh) {
- u32 tmp = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
- if (tmp)
- affs_warning(sb, "commit_write_ofs", "next block already set for %d (%d)", bidx, tmp);
+ u32 tmp_next = be32_to_cpu(AFFS_DATA_HEAD(prev_bh)->next);
+
+ if (tmp_next)
+ affs_warning(sb, "commit_write_ofs",
+ "next block already set for %d (%d)",
+ bidx, tmp_next);
AFFS_DATA_HEAD(prev_bh)->next = cpu_to_be32(bh->b_blocknr);
- affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp);
+ affs_adjust_checksum(prev_bh, bh->b_blocknr - tmp_next);
mark_buffer_dirty_inode(prev_bh, inode);
}
} else if (be32_to_cpu(AFFS_DATA_HEAD(bh)->size) < tmp)
@@ -842,12 +851,12 @@ affs_truncate(struct inode *inode)
struct address_space *mapping = inode->i_mapping;
struct page *page;
void *fsdata;
- loff_t size = inode->i_size;
+ loff_t isize = inode->i_size;
int res;
- res = mapping->a_ops->write_begin(NULL, mapping, size, 0, 0, &page, &fsdata);
+ res = mapping->a_ops->write_begin(NULL, mapping, isize, 0, 0, &page, &fsdata);
if (!res)
- res = mapping->a_ops->write_end(NULL, mapping, size, 0, 0, page, fsdata);
+ res = mapping->a_ops->write_end(NULL, mapping, isize, 0, 0, page, fsdata);
else
inode->i_size = AFFS_I(inode)->mmu_private;
mark_inode_dirty(inode);
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index bec2d1a0c91c..e217c511459b 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -14,13 +14,11 @@
#include "affs.h"
extern const struct inode_operations affs_symlink_inode_operations;
-extern struct timezone sys_tz;
struct inode *affs_iget(struct super_block *sb, unsigned long ino)
{
struct affs_sb_info *sbi = AFFS_SB(sb);
struct buffer_head *bh;
- struct affs_head *head;
struct affs_tail *tail;
struct inode *inode;
u32 block;
@@ -49,7 +47,6 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
}
- head = AFFS_HEAD(bh);
tail = AFFS_TAIL(sb, bh);
prot = be32_to_cpu(tail->protect);
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 51f1a95bff73..f754ab68a840 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -20,8 +20,6 @@
#include <linux/writeback.h>
#include "affs.h"
-extern struct timezone sys_tz;
-
static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
static int affs_remount (struct super_block *sb, int *flags, char *data);
@@ -308,7 +306,6 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
u32 chksum;
int num_bm;
int i, j;
- s32 key;
kuid_t uid;
kgid_t gid;
int reserved;
@@ -367,7 +364,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
i = j = blocksize;
size = size / (blocksize / 512);
}
- for (blocksize = i, key = 0; blocksize <= j; blocksize <<= 1, size >>= 1) {
+ for (blocksize = i; blocksize <= j; blocksize <<= 1, size >>= 1) {
sbi->s_root_block = root_block;
if (root_block < 0)
sbi->s_root_block = (reserved + size - 1) / 2;
@@ -399,7 +396,6 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
be32_to_cpu(AFFS_ROOT_TAIL(sb, root_bh)->stype) == ST_ROOT) {
sbi->s_hashsize = blocksize / 4 - 56;
sbi->s_root_block += num_bm;
- key = 1;
goto got_root;
}
affs_brelse(root_bh);
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 9e359fb20c0a..8e98cf954bab 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -79,6 +79,10 @@ struct autofs_info {
};
#define AUTOFS_INF_EXPIRING (1<<0) /* dentry is in the process of expiring */
+#define AUTOFS_INF_NO_RCU (1<<1) /* the dentry is being considered
+ * for expiry, so RCU_walk is
+ * not permitted
+ */
#define AUTOFS_INF_PENDING (1<<2) /* dentry pending mount */
struct autofs_wait_queue {
@@ -148,7 +152,7 @@ void autofs4_free_ino(struct autofs_info *);
/* Expiration */
int is_autofs4_dentry(struct dentry *);
-int autofs4_expire_wait(struct dentry *dentry);
+int autofs4_expire_wait(struct dentry *dentry, int rcu_walk);
int autofs4_expire_run(struct super_block *, struct vfsmount *,
struct autofs_sb_info *,
struct autofs_packet_expire __user *);
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 5b570b6efa28..aaf96cb25452 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -450,7 +450,7 @@ static int autofs_dev_ioctl_requester(struct file *fp,
ino = autofs4_dentry_ino(path.dentry);
if (ino) {
err = 0;
- autofs4_expire_wait(path.dentry);
+ autofs4_expire_wait(path.dentry, 0);
spin_lock(&sbi->fs_lock);
param->requester.uid = from_kuid_munged(current_user_ns(), ino->uid);
param->requester.gid = from_kgid_munged(current_user_ns(), ino->gid);
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 8fa3895cda02..683a5b9ce22a 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -30,12 +30,6 @@ static inline int autofs4_can_expire(struct dentry *dentry,
/* Too young to die */
if (!timeout || time_after(ino->last_used + timeout, now))
return 0;
-
- /* update last_used here :-
- - obviously makes sense if it is in use now
- - less obviously, prevents rapid-fire expire
- attempts if expire fails the first time */
- ino->last_used = now;
}
return 1;
}
@@ -327,10 +321,19 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
if (ino->flags & AUTOFS_INF_PENDING)
goto out;
if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
- ino->flags |= AUTOFS_INF_EXPIRING;
- init_completion(&ino->expire_complete);
+ ino->flags |= AUTOFS_INF_NO_RCU;
spin_unlock(&sbi->fs_lock);
- return root;
+ synchronize_rcu();
+ spin_lock(&sbi->fs_lock);
+ if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+ ino->flags |= AUTOFS_INF_EXPIRING;
+ smp_mb();
+ ino->flags &= ~AUTOFS_INF_NO_RCU;
+ init_completion(&ino->expire_complete);
+ spin_unlock(&sbi->fs_lock);
+ return root;
+ }
+ ino->flags &= ~AUTOFS_INF_NO_RCU;
}
out:
spin_unlock(&sbi->fs_lock);
@@ -339,6 +342,89 @@ out:
return NULL;
}
+/* Check if 'dentry' should expire, or return a nearby
+ * dentry that is suitable.
+ * If returned dentry is different from arg dentry,
+ * then a dget() reference was taken, else not.
+ */
+static struct dentry *should_expire(struct dentry *dentry,
+ struct vfsmount *mnt,
+ unsigned long timeout,
+ int how)
+{
+ int do_now = how & AUTOFS_EXP_IMMEDIATE;
+ int exp_leaves = how & AUTOFS_EXP_LEAVES;
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ unsigned int ino_count;
+
+ /* No point expiring a pending mount */
+ if (ino->flags & AUTOFS_INF_PENDING)
+ return NULL;
+
+ /*
+ * Case 1: (i) indirect mount or top level pseudo direct mount
+ * (autofs-4.1).
+ * (ii) indirect mount with offset mount, check the "/"
+ * offset (autofs-5.0+).
+ */
+ if (d_mountpoint(dentry)) {
+ DPRINTK("checking mountpoint %p %.*s",
+ dentry, (int)dentry->d_name.len, dentry->d_name.name);
+
+ /* Can we umount this guy */
+ if (autofs4_mount_busy(mnt, dentry))
+ return NULL;
+
+ /* Can we expire this guy */
+ if (autofs4_can_expire(dentry, timeout, do_now))
+ return dentry;
+ return NULL;
+ }
+
+ if (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)) {
+ DPRINTK("checking symlink %p %.*s",
+ dentry, (int)dentry->d_name.len, dentry->d_name.name);
+ /*
+ * A symlink can't be "busy" in the usual sense so
+ * just check last used for expire timeout.
+ */
+ if (autofs4_can_expire(dentry, timeout, do_now))
+ return dentry;
+ return NULL;
+ }
+
+ if (simple_empty(dentry))
+ return NULL;
+
+ /* Case 2: tree mount, expire iff entire tree is not busy */
+ if (!exp_leaves) {
+ /* Path walk currently on this dentry? */
+ ino_count = atomic_read(&ino->count) + 1;
+ if (d_count(dentry) > ino_count)
+ return NULL;
+
+ if (!autofs4_tree_busy(mnt, dentry, timeout, do_now))
+ return dentry;
+ /*
+ * Case 3: pseudo direct mount, expire individual leaves
+ * (autofs-4.1).
+ */
+ } else {
+ /* Path walk currently on this dentry? */
+ struct dentry *expired;
+ ino_count = atomic_read(&ino->count) + 1;
+ if (d_count(dentry) > ino_count)
+ return NULL;
+
+ expired = autofs4_check_leaves(mnt, dentry, timeout, do_now);
+ if (expired) {
+ if (expired == dentry)
+ dput(dentry);
+ return expired;
+ }
+ }
+ return NULL;
+}
/*
* Find an eligible tree to time-out
* A tree is eligible if :-
@@ -353,11 +439,8 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
unsigned long timeout;
struct dentry *root = sb->s_root;
struct dentry *dentry;
- struct dentry *expired = NULL;
- int do_now = how & AUTOFS_EXP_IMMEDIATE;
- int exp_leaves = how & AUTOFS_EXP_LEAVES;
+ struct dentry *expired;
struct autofs_info *ino;
- unsigned int ino_count;
if (!root)
return NULL;
@@ -369,77 +452,28 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
while ((dentry = get_next_positive_subdir(dentry, root))) {
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
- /* No point expiring a pending mount */
- if (ino->flags & AUTOFS_INF_PENDING)
- goto next;
-
- /*
- * Case 1: (i) indirect mount or top level pseudo direct mount
- * (autofs-4.1).
- * (ii) indirect mount with offset mount, check the "/"
- * offset (autofs-5.0+).
- */
- if (d_mountpoint(dentry)) {
- DPRINTK("checking mountpoint %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
-
- /* Can we umount this guy */
- if (autofs4_mount_busy(mnt, dentry))
- goto next;
-
- /* Can we expire this guy */
- if (autofs4_can_expire(dentry, timeout, do_now)) {
- expired = dentry;
- goto found;
- }
- goto next;
+ if (ino->flags & AUTOFS_INF_NO_RCU)
+ expired = NULL;
+ else
+ expired = should_expire(dentry, mnt, timeout, how);
+ if (!expired) {
+ spin_unlock(&sbi->fs_lock);
+ continue;
}
-
- if (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)) {
- DPRINTK("checking symlink %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
- /*
- * A symlink can't be "busy" in the usual sense so
- * just check last used for expire timeout.
- */
- if (autofs4_can_expire(dentry, timeout, do_now)) {
- expired = dentry;
- goto found;
- }
- goto next;
- }
-
- if (simple_empty(dentry))
- goto next;
-
- /* Case 2: tree mount, expire iff entire tree is not busy */
- if (!exp_leaves) {
- /* Path walk currently on this dentry? */
- ino_count = atomic_read(&ino->count) + 1;
- if (d_count(dentry) > ino_count)
- goto next;
-
- if (!autofs4_tree_busy(mnt, dentry, timeout, do_now)) {
- expired = dentry;
- goto found;
- }
- /*
- * Case 3: pseudo direct mount, expire individual leaves
- * (autofs-4.1).
- */
- } else {
- /* Path walk currently on this dentry? */
- ino_count = atomic_read(&ino->count) + 1;
- if (d_count(dentry) > ino_count)
- goto next;
-
- expired = autofs4_check_leaves(mnt, dentry, timeout, do_now);
- if (expired) {
+ ino = autofs4_dentry_ino(expired);
+ ino->flags |= AUTOFS_INF_NO_RCU;
+ 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;
- }
+ goto found;
}
-next:
+
+ ino->flags &= ~AUTOFS_INF_NO_RCU;
+ if (expired != dentry)
+ dput(expired);
spin_unlock(&sbi->fs_lock);
}
return NULL;
@@ -447,8 +481,9 @@ next:
found:
DPRINTK("returning %p %.*s",
expired, (int)expired->d_name.len, expired->d_name.name);
- ino = autofs4_dentry_ino(expired);
ino->flags |= AUTOFS_INF_EXPIRING;
+ smp_mb();
+ ino->flags &= ~AUTOFS_INF_NO_RCU;
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
spin_lock(&sbi->lookup_lock);
@@ -461,13 +496,18 @@ found:
return expired;
}
-int autofs4_expire_wait(struct dentry *dentry)
+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;
/* Block on any pending expire */
+ if (!(ino->flags & (AUTOFS_INF_EXPIRING | AUTOFS_INF_NO_RCU)))
+ return 0;
+ if (rcu_walk)
+ return -ECHILD;
+
spin_lock(&sbi->fs_lock);
if (ino->flags & AUTOFS_INF_EXPIRING) {
spin_unlock(&sbi->fs_lock);
@@ -519,6 +559,8 @@ int autofs4_expire_run(struct super_block *sb,
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
+ /* avoid rapid-fire expire attempts if expiry fails */
+ ino->last_used = now;
ino->flags &= ~AUTOFS_INF_EXPIRING;
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
@@ -545,6 +587,8 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
ret = autofs4_wait(sbi, dentry, NFY_EXPIRE);
spin_lock(&sbi->fs_lock);
+ /* avoid rapid-fire expire attempts if expiry fails */
+ ino->last_used = now;
ino->flags &= ~AUTOFS_INF_EXPIRING;
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index cdb25ebccc4c..d76d083f2f06 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -210,7 +210,8 @@ next:
return NULL;
}
-static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
+static struct dentry *autofs4_lookup_expiring(struct dentry *dentry,
+ bool rcu_walk)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct dentry *parent = dentry->d_parent;
@@ -229,6 +230,11 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
struct dentry *expiring;
struct qstr *qstr;
+ if (rcu_walk) {
+ spin_unlock(&sbi->lookup_lock);
+ return ERR_PTR(-ECHILD);
+ }
+
ino = list_entry(p, struct autofs_info, expiring);
expiring = ino->dentry;
@@ -264,13 +270,15 @@ next:
return NULL;
}
-static int autofs4_mount_wait(struct dentry *dentry)
+static int autofs4_mount_wait(struct dentry *dentry, bool rcu_walk)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
int status = 0;
if (ino->flags & AUTOFS_INF_PENDING) {
+ if (rcu_walk)
+ return -ECHILD;
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
@@ -280,20 +288,22 @@ static int autofs4_mount_wait(struct dentry *dentry)
return status;
}
-static int do_expire_wait(struct dentry *dentry)
+static int do_expire_wait(struct dentry *dentry, bool rcu_walk)
{
struct dentry *expiring;
- expiring = autofs4_lookup_expiring(dentry);
+ expiring = autofs4_lookup_expiring(dentry, rcu_walk);
+ if (IS_ERR(expiring))
+ return PTR_ERR(expiring);
if (!expiring)
- return autofs4_expire_wait(dentry);
+ return autofs4_expire_wait(dentry, rcu_walk);
else {
/*
* If we are racing with expire the request might not
* be quite complete, but the directory has been removed
* so it must have been successful, just wait for it.
*/
- autofs4_expire_wait(expiring);
+ autofs4_expire_wait(expiring, 0);
autofs4_del_expiring(expiring);
dput(expiring);
}
@@ -345,7 +355,7 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
* and the directory was removed, so just go ahead and try
* the mount.
*/
- status = do_expire_wait(dentry);
+ status = do_expire_wait(dentry, 0);
if (status && status != -EAGAIN)
return NULL;
@@ -353,7 +363,7 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
spin_lock(&sbi->fs_lock);
if (ino->flags & AUTOFS_INF_PENDING) {
spin_unlock(&sbi->fs_lock);
- status = autofs4_mount_wait(dentry);
+ status = autofs4_mount_wait(dentry, 0);
if (status)
return ERR_PTR(status);
goto done;
@@ -394,7 +404,7 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
}
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
- status = autofs4_mount_wait(dentry);
+ status = autofs4_mount_wait(dentry, 0);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
if (status) {
@@ -423,28 +433,46 @@ static int autofs4_d_manage(struct dentry *dentry, bool rcu_walk)
/* The daemon never waits. */
if (autofs4_oz_mode(sbi)) {
- if (rcu_walk)
- return 0;
if (!d_mountpoint(dentry))
return -EISDIR;
return 0;
}
- /* We need to sleep, so we need pathwalk to be in ref-mode */
- if (rcu_walk)
- return -ECHILD;
-
/* Wait for pending expires */
- do_expire_wait(dentry);
+ if (do_expire_wait(dentry, rcu_walk) == -ECHILD)
+ return -ECHILD;
/*
* This dentry may be under construction so wait on mount
* completion.
*/
- status = autofs4_mount_wait(dentry);
+ status = autofs4_mount_wait(dentry, rcu_walk);
if (status)
return status;
+ if (rcu_walk) {
+ /* We don't need fs_lock in rcu_walk mode,
+ * just testing 'AUTOFS_INFO_NO_RCU' is enough.
+ * simple_empty() takes a spinlock, so leave it
+ * to last.
+ * We only return -EISDIR when certain this isn't
+ * a mount-trap.
+ */
+ struct inode *inode;
+ if (ino->flags & (AUTOFS_INF_EXPIRING | AUTOFS_INF_NO_RCU))
+ return 0;
+ if (d_mountpoint(dentry))
+ return 0;
+ inode = ACCESS_ONCE(dentry->d_inode);
+ if (inode && S_ISLNK(inode->i_mode))
+ return -EISDIR;
+ if (list_empty(&dentry->d_subdirs))
+ return 0;
+ if (!simple_empty(dentry))
+ return -EISDIR;
+ return 0;
+ }
+
spin_lock(&sbi->fs_lock);
/*
* If the dentry has been selected for expire while we slept
diff --git a/fs/befs/btree.c b/fs/befs/btree.c
index 9c7faa8a9288..0826e91dacda 100644
--- a/fs/befs/btree.c
+++ b/fs/befs/btree.c
@@ -78,11 +78,11 @@
/*
* In memory structure of each btree node
*/
-typedef struct {
+struct befs_btree_node {
befs_host_btree_nodehead head; /* head of node converted to cpu byteorder */
struct buffer_head *bh;
befs_btree_nodehead *od_node; /* on disk node */
-} befs_btree_node;
+};
/* local constants */
static const befs_off_t befs_bt_inval = 0xffffffffffffffffULL;
@@ -90,27 +90,30 @@ static const befs_off_t befs_bt_inval = 0xffffffffffffffffULL;
/* local functions */
static int befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds,
befs_btree_super * bt_super,
- befs_btree_node * this_node,
+ struct befs_btree_node *this_node,
befs_off_t * node_off);
static int befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
befs_btree_super * sup);
static int befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
- befs_btree_node * node, befs_off_t node_off);
+ struct befs_btree_node *node,
+ befs_off_t node_off);
-static int befs_leafnode(befs_btree_node * node);
+static int befs_leafnode(struct befs_btree_node *node);
-static fs16 *befs_bt_keylen_index(befs_btree_node * node);
+static fs16 *befs_bt_keylen_index(struct befs_btree_node *node);
-static fs64 *befs_bt_valarray(befs_btree_node * node);
+static fs64 *befs_bt_valarray(struct befs_btree_node *node);
-static char *befs_bt_keydata(befs_btree_node * node);
+static char *befs_bt_keydata(struct befs_btree_node *node);
-static int befs_find_key(struct super_block *sb, befs_btree_node * node,
+static int befs_find_key(struct super_block *sb,
+ struct befs_btree_node *node,
const char *findkey, befs_off_t * value);
-static char *befs_bt_get_key(struct super_block *sb, befs_btree_node * node,
+static char *befs_bt_get_key(struct super_block *sb,
+ struct befs_btree_node *node,
int index, u16 * keylen);
static int befs_compare_strings(const void *key1, int keylen1,
@@ -191,7 +194,7 @@ befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
static int
befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
- befs_btree_node * node, befs_off_t node_off)
+ struct befs_btree_node *node, befs_off_t node_off)
{
uint off = 0;
@@ -247,7 +250,7 @@ int
befs_btree_find(struct super_block *sb, befs_data_stream * ds,
const char *key, befs_off_t * value)
{
- befs_btree_node *this_node = NULL;
+ struct befs_btree_node *this_node = NULL;
befs_btree_super bt_super;
befs_off_t node_off;
int res;
@@ -260,11 +263,11 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds,
goto error;
}
- this_node = kmalloc(sizeof (befs_btree_node),
+ this_node = kmalloc(sizeof(struct befs_btree_node),
GFP_NOFS);
if (!this_node) {
befs_error(sb, "befs_btree_find() failed to allocate %zu "
- "bytes of memory", sizeof (befs_btree_node));
+ "bytes of memory", sizeof(struct befs_btree_node));
goto error;
}
@@ -333,7 +336,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds,
* Use binary search instead of a linear.
*/
static int
-befs_find_key(struct super_block *sb, befs_btree_node * node,
+befs_find_key(struct super_block *sb, struct befs_btree_node *node,
const char *findkey, befs_off_t * value)
{
int first, last, mid;
@@ -417,7 +420,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds,
loff_t key_no, size_t bufsize, char *keybuf, size_t * keysize,
befs_off_t * value)
{
- befs_btree_node *this_node;
+ struct befs_btree_node *this_node;
befs_btree_super bt_super;
befs_off_t node_off = 0;
int cur_key;
@@ -436,9 +439,10 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds,
goto error;
}
- if ((this_node = kmalloc(sizeof (befs_btree_node), GFP_NOFS)) == NULL) {
+ this_node = kmalloc(sizeof(struct befs_btree_node), GFP_NOFS);
+ if (this_node == NULL) {
befs_error(sb, "befs_btree_read() failed to allocate %zu "
- "bytes of memory", sizeof (befs_btree_node));
+ "bytes of memory", sizeof(struct befs_btree_node));
goto error;
}
@@ -545,7 +549,8 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds,
*/
static int
befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds,
- befs_btree_super * bt_super, befs_btree_node * this_node,
+ befs_btree_super *bt_super,
+ struct befs_btree_node *this_node,
befs_off_t * node_off)
{
@@ -600,7 +605,7 @@ befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds,
* Return 1 if leaf, 0 if interior
*/
static int
-befs_leafnode(befs_btree_node * node)
+befs_leafnode(struct befs_btree_node *node)
{
/* all interior nodes (and only interior nodes) have an overflow node */
if (node->head.overflow == befs_bt_inval)
@@ -623,7 +628,7 @@ befs_leafnode(befs_btree_node * node)
* Except that rounding up to 8 works, and rounding up to 4 doesn't.
*/
static fs16 *
-befs_bt_keylen_index(befs_btree_node * node)
+befs_bt_keylen_index(struct befs_btree_node *node)
{
const int keylen_align = 8;
unsigned long int off =
@@ -644,7 +649,7 @@ befs_bt_keylen_index(befs_btree_node * node)
* of the node pointed to by the node header
*/
static fs64 *
-befs_bt_valarray(befs_btree_node * node)
+befs_bt_valarray(struct befs_btree_node *node)
{
void *keylen_index_start = (void *) befs_bt_keylen_index(node);
size_t keylen_index_size = node->head.all_key_count * sizeof (fs16);
@@ -660,7 +665,7 @@ befs_bt_valarray(befs_btree_node * node)
* of the node pointed to by the node header
*/
static char *
-befs_bt_keydata(befs_btree_node * node)
+befs_bt_keydata(struct befs_btree_node *node)
{
return (char *) ((void *) node->od_node + sizeof (befs_btree_nodehead));
}
@@ -676,7 +681,7 @@ befs_bt_keydata(befs_btree_node * node)
* Returns NULL on failure (bad input) and sets *@keylen = 0
*/
static char *
-befs_bt_get_key(struct super_block *sb, befs_btree_node * node,
+befs_bt_get_key(struct super_block *sb, struct befs_btree_node *node,
int index, u16 * keylen)
{
int prev_key_end;
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index b60500300dd7..fd8beb9657a2 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -62,7 +62,22 @@ static struct file_system_type bm_fs_type;
static struct vfsmount *bm_mnt;
static int entry_count;
-/*
+/*
+ * Max length of the register string. Determined by:
+ * - 7 delimiters
+ * - name: ~50 bytes
+ * - type: 1 byte
+ * - offset: 3 bytes (has to be smaller than BINPRM_BUF_SIZE)
+ * - magic: 128 bytes (512 in escaped form)
+ * - mask: 128 bytes (512 in escaped form)
+ * - interp: ~50 bytes
+ * - flags: 5 bytes
+ * Round that up a bit, and then back off to hold the internal data
+ * (like struct Node).
+ */
+#define MAX_REGISTER_LENGTH 1920
+
+/*
* Check if we support the binfmt
* if we do, return the node, else NULL
* locking is done in load_misc_binary
@@ -279,7 +294,7 @@ static Node *create_entry(const char __user *buffer, size_t count)
/* some sanity checks */
err = -EINVAL;
- if ((count < 11) || (count > 256))
+ if ((count < 11) || (count > MAX_REGISTER_LENGTH))
goto out;
err = -ENOMEM;
@@ -396,12 +411,12 @@ static int parse_command(const char __user *buffer, size_t count)
{
char s[4];
- if (!count)
- return 0;
if (count > 3)
return -EINVAL;
if (copy_from_user(s, buffer, count))
return -EFAULT;
+ if (!count)
+ return 0;
if (s[count-1] == '\n')
count--;
if (count == 1 && s[0] == '0')
diff --git a/fs/buffer.c b/fs/buffer.c
index d1f704806264..9614adc7e754 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1331,8 +1331,8 @@ lookup_bh_lru(struct block_device *bdev, sector_t block, unsigned size)
for (i = 0; i < BH_LRU_SIZE; i++) {
struct buffer_head *bh = __this_cpu_read(bh_lrus.bhs[i]);
- if (bh && bh->b_bdev == bdev &&
- bh->b_blocknr == block && bh->b_size == size) {
+ if (bh && bh->b_blocknr == block && bh->b_bdev == bdev &&
+ bh->b_size == size) {
if (i) {
while (i) {
__this_cpu_write(bh_lrus.bhs[i],
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 58df174deb10..b8602f199815 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -195,15 +195,15 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
else
noff = tkn_e - (sb_mountdata + off) + 1;
- if (strnicmp(sb_mountdata + off, "unc=", 4) == 0) {
+ if (strncasecmp(sb_mountdata + off, "unc=", 4) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata + off, "ip=", 3) == 0) {
+ if (strncasecmp(sb_mountdata + off, "ip=", 3) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata + off, "prefixpath=", 11) == 0) {
+ if (strncasecmp(sb_mountdata + off, "prefixpath=", 11) == 0) {
off += noff;
continue;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 36ca2045009b..239e1fb33000 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1718,7 +1718,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
goto cifs_parse_mount_err;
}
- if (strnicmp(string, "default", 7) != 0) {
+ if (strncasecmp(string, "default", 7) != 0) {
vol->iocharset = kstrdup(string,
GFP_KERNEL);
if (!vol->iocharset) {
@@ -1790,7 +1790,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
if (string == NULL)
goto out_nomem;
- if (strnicmp(string, "1", 1) == 0) {
+ if (strncasecmp(string, "1", 1) == 0) {
/* This is the default */
break;
}
diff --git a/fs/coredump.c b/fs/coredump.c
index a93f7e6ea4cf..b5c86ffd5033 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -199,6 +199,14 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
err = cn_printf(cn, "%d",
task_tgid_nr(current));
break;
+ case 'i':
+ err = cn_printf(cn, "%d",
+ task_pid_vnr(current));
+ break;
+ case 'I':
+ err = cn_printf(cn, "%d",
+ task_pid_nr(current));
+ break;
/* uid */
case 'u':
err = cn_printf(cn, "%d", cred->uid);
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 628e22a5a543..d8da2d2e30ae 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -164,8 +164,6 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
return 0;
}
-extern struct timezone sys_tz;
-
/*
* The epoch of FAT timestamp is 1980.
* : bits : value
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 0524cda47a6e..95d255219b1e 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -242,8 +242,6 @@ extern int hfs_mac2asc(struct super_block *, char *, const struct hfs_name *);
/* super.c */
extern void hfs_mark_mdb_dirty(struct super_block *sb);
-extern struct timezone sys_tz;
-
/*
* There are two time systems. Both are based on seconds since
* a particular time/date.
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 5ddaf8625d3b..881b3bd0143f 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -247,7 +247,7 @@ static int isofs_dentry_cmp_common(
}
if (alen == blen) {
if (ci) {
- if (strnicmp(name->name, str, alen) == 0)
+ if (strncasecmp(name->name, str, alen) == 0)
return 0;
} else {
if (strncmp(name->name, str, alen) == 0)
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 314e7add99b8..7cb751dfbeef 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -1178,9 +1178,6 @@ static int day_n[] =
{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
/* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
-
-extern struct timezone sys_tz;
-
static int utc2local(int time)
{
return time - sys_tz.tz_minuteswest * 60;
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 24978153c0c4..e9e3325f29f3 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -56,11 +56,9 @@ int nilfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
mutex_unlock(&inode->i_mutex);
nilfs = inode->i_sb->s_fs_info;
- if (!err && nilfs_test_opt(nilfs, BARRIER)) {
- err = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
- if (err != -EIO)
- err = 0;
- }
+ if (!err)
+ err = nilfs_flush_device(nilfs);
+
return err;
}
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index d071e7f23de2..e1fa69b341b9 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -126,7 +126,7 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
nilfs_transaction_abort(inode->i_sb);
goto out;
}
- nilfs_mark_inode_dirty(inode);
+ nilfs_mark_inode_dirty_sync(inode);
nilfs_transaction_commit(inode->i_sb); /* never fails */
/* Error handling should be detailed */
set_buffer_new(bh_result);
@@ -672,7 +672,7 @@ void nilfs_write_inode_common(struct inode *inode,
for substitutions of appended fields */
}
-void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
+void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh, int flags)
{
ino_t ino = inode->i_ino;
struct nilfs_inode_info *ii = NILFS_I(inode);
@@ -683,7 +683,8 @@ void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
memset(raw_inode, 0, NILFS_MDT(ifile)->mi_entry_size);
- set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
+ if (flags & I_DIRTY_DATASYNC)
+ set_bit(NILFS_I_INODE_SYNC, &ii->i_state);
nilfs_write_inode_common(inode, raw_inode, 0);
/* XXX: call with has_bmap = 0 is a workaround to avoid
@@ -939,7 +940,7 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty)
return 0;
}
-int nilfs_mark_inode_dirty(struct inode *inode)
+int __nilfs_mark_inode_dirty(struct inode *inode, int flags)
{
struct buffer_head *ibh;
int err;
@@ -950,7 +951,7 @@ int nilfs_mark_inode_dirty(struct inode *inode)
"failed to reget inode block.\n");
return err;
}
- nilfs_update_inode(inode, ibh);
+ nilfs_update_inode(inode, ibh, flags);
mark_buffer_dirty(ibh);
nilfs_mdt_mark_dirty(NILFS_I(inode)->i_root->ifile);
brelse(ibh);
@@ -983,7 +984,7 @@ void nilfs_dirty_inode(struct inode *inode, int flags)
return;
}
nilfs_transaction_begin(inode->i_sb, &ti, 0);
- nilfs_mark_inode_dirty(inode);
+ __nilfs_mark_inode_dirty(inode, flags);
nilfs_transaction_commit(inode->i_sb); /* never fails */
}
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 422fb54b7377..9a20e513d7eb 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -1022,11 +1022,9 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
return ret;
nilfs = inode->i_sb->s_fs_info;
- if (nilfs_test_opt(nilfs, BARRIER)) {
- ret = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
- if (ret == -EIO)
- return ret;
- }
+ ret = nilfs_flush_device(nilfs);
+ if (ret < 0)
+ return ret;
if (argp != NULL) {
down_read(&nilfs->ns_segctor_sem);
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 0696161bf59d..91093cd74f0d 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -104,7 +104,7 @@ enum {
constructor */
NILFS_I_COLLECTED, /* All dirty blocks are collected */
NILFS_I_UPDATED, /* The file has been written back */
- NILFS_I_INODE_DIRTY, /* write_inode is requested */
+ NILFS_I_INODE_SYNC, /* dsync is not allowed for inode */
NILFS_I_BMAP, /* has bmap and btnode_cache */
NILFS_I_GCINODE, /* inode for GC, on memory only */
};
@@ -273,7 +273,7 @@ struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root,
unsigned long ino);
extern struct inode *nilfs_iget_for_gc(struct super_block *sb,
unsigned long ino, __u64 cno);
-extern void nilfs_update_inode(struct inode *, struct buffer_head *);
+extern void nilfs_update_inode(struct inode *, struct buffer_head *, int);
extern void nilfs_truncate(struct inode *);
extern void nilfs_evict_inode(struct inode *);
extern int nilfs_setattr(struct dentry *, struct iattr *);
@@ -282,10 +282,18 @@ int nilfs_permission(struct inode *inode, int mask);
int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh);
extern int nilfs_inode_dirty(struct inode *);
int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty);
-extern int nilfs_mark_inode_dirty(struct inode *);
+extern int __nilfs_mark_inode_dirty(struct inode *, int);
extern void nilfs_dirty_inode(struct inode *, int flags);
int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len);
+static inline int nilfs_mark_inode_dirty(struct inode *inode)
+{
+ return __nilfs_mark_inode_dirty(inode, I_DIRTY);
+}
+static inline int nilfs_mark_inode_dirty_sync(struct inode *inode)
+{
+ return __nilfs_mark_inode_dirty(inode, I_DIRTY_SYNC);
+}
/* super.c */
extern struct inode *nilfs_alloc_inode(struct super_block *);
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index a1a191634abc..7ef18fc656c2 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -930,7 +930,7 @@ static void nilfs_drop_collected_inodes(struct list_head *head)
if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state))
continue;
- clear_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
+ clear_bit(NILFS_I_INODE_SYNC, &ii->i_state);
set_bit(NILFS_I_UPDATED, &ii->i_state);
}
}
@@ -1833,6 +1833,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
nilfs_set_next_segment(nilfs, segbuf);
if (update_sr) {
+ nilfs->ns_flushed_device = 0;
nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start,
segbuf->sb_sum.seg_seq, nilfs->ns_cno++);
@@ -2194,7 +2195,7 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
nilfs_transaction_lock(sb, &ti, 0);
ii = NILFS_I(inode);
- if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) ||
+ if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) ||
nilfs_test_opt(nilfs, STRICT_ORDER) ||
test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
nilfs_discontinued(nilfs)) {
@@ -2216,6 +2217,8 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
sci->sc_dsync_end = end;
err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC);
+ if (!err)
+ nilfs->ns_flushed_device = 0;
nilfs_transaction_unlock(sb);
return err;
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 228f5bdf0772..2e5b3ec85b8f 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -310,6 +310,9 @@ int nilfs_commit_super(struct super_block *sb, int flag)
nilfs->ns_sbsize));
}
clear_nilfs_sb_dirty(nilfs);
+ nilfs->ns_flushed_device = 1;
+ /* make sure store to ns_flushed_device cannot be reordered */
+ smp_wmb();
return nilfs_sync_super(sb, flag);
}
@@ -514,6 +517,9 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
}
up_write(&nilfs->ns_sem);
+ if (!err)
+ err = nilfs_flush_device(nilfs);
+
return err;
}
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index d01ead1bea9a..23778d385836 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -46,6 +46,7 @@ enum {
/**
* struct the_nilfs - struct to supervise multiple nilfs mount points
* @ns_flags: flags
+ * @ns_flushed_device: flag indicating if all volatile data was flushed
* @ns_bdev: block device
* @ns_sem: semaphore for shared states
* @ns_snapshot_mount_mutex: mutex to protect snapshot mounts
@@ -103,6 +104,7 @@ enum {
*/
struct the_nilfs {
unsigned long ns_flags;
+ int ns_flushed_device;
struct block_device *ns_bdev;
struct rw_semaphore ns_sem;
@@ -371,4 +373,24 @@ static inline int nilfs_segment_is_active(struct the_nilfs *nilfs, __u64 n)
return n == nilfs->ns_segnum || n == nilfs->ns_nextnum;
}
+static inline int nilfs_flush_device(struct the_nilfs *nilfs)
+{
+ int err;
+
+ if (!nilfs_test_opt(nilfs, BARRIER) || nilfs->ns_flushed_device)
+ return 0;
+
+ nilfs->ns_flushed_device = 1;
+ /*
+ * the store to ns_flushed_device must not be reordered after
+ * blkdev_issue_flush().
+ */
+ smp_wmb();
+
+ err = blkdev_issue_flush(nilfs->ns_bdev, GFP_KERNEL, NULL);
+ if (err != -EIO)
+ err = 0;
+ return err;
+}
+
#endif /* _THE_NILFS_H */
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index d13385448168..eb9d48746ab4 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -2244,7 +2244,7 @@ ssize_t o2hb_heartbeat_group_mode_store(struct o2hb_heartbeat_group *group,
return -EINVAL;
for (i = 0; i < O2HB_HEARTBEAT_NUM_MODES; ++i) {
- if (strnicmp(page, o2hb_heartbeat_mode_desc[i], len))
+ if (strncasecmp(page, o2hb_heartbeat_mode_desc[i], len))
continue;
ret = o2hb_global_heartbeat_mode_set(i);
diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c
index 07ac24fd9252..af7598bff1b5 100644
--- a/fs/ocfs2/cluster/masklog.c
+++ b/fs/ocfs2/cluster/masklog.c
@@ -49,13 +49,13 @@ static ssize_t mlog_mask_show(u64 mask, char *buf)
static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count)
{
- if (!strnicmp(buf, "allow", 5)) {
+ if (!strncasecmp(buf, "allow", 5)) {
__mlog_set_u64(mask, mlog_and_bits);
__mlog_clear_u64(mask, mlog_not_bits);
- } else if (!strnicmp(buf, "deny", 4)) {
+ } else if (!strncasecmp(buf, "deny", 4)) {
__mlog_set_u64(mask, mlog_not_bits);
__mlog_clear_u64(mask, mlog_and_bits);
- } else if (!strnicmp(buf, "off", 3)) {
+ } else if (!strncasecmp(buf, "off", 3)) {
__mlog_clear_u64(mask, mlog_not_bits);
__mlog_clear_u64(mask, mlog_and_bits);
} else
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index ba8819702c56..138321b0c6c2 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -306,9 +306,7 @@ static const struct super_operations omfs_sops = {
*/
static int omfs_get_imap(struct super_block *sb)
{
- int bitmap_size;
- int array_size;
- int count;
+ unsigned int bitmap_size, count, array_size;
struct omfs_sb_info *sbi = OMFS_SB(sb);
struct buffer_head *bh;
unsigned long **ptr;
@@ -473,6 +471,12 @@ static int omfs_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_sys_blocksize = be32_to_cpu(omfs_sb->s_sys_blocksize);
mutex_init(&sbi->s_bitmap_lock);
+ if (sbi->s_num_blocks > OMFS_MAX_BLOCKS) {
+ printk(KERN_ERR "omfs: sysblock number (%llx) is out of range\n",
+ (unsigned long long)sbi->s_num_blocks);
+ goto out_brelse_bh;
+ }
+
if (sbi->s_sys_blocksize > PAGE_SIZE) {
printk(KERN_ERR "omfs: sysblock size (%d) is out of range\n",
sbi->s_sys_blocksize);
diff --git a/fs/omfs/omfs_fs.h b/fs/omfs/omfs_fs.h
index ee5e4327de92..83a98330ed66 100644
--- a/fs/omfs/omfs_fs.h
+++ b/fs/omfs/omfs_fs.h
@@ -18,6 +18,7 @@
#define OMFS_XOR_COUNT 19
#define OMFS_MAX_BLOCK_SIZE 8192
#define OMFS_MAX_CLUSTER_SIZE 8
+#define OMFS_MAX_BLOCKS (1ul << 31)
struct omfs_super_block {
char s_fill1[256];
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index b7a7dc963a35..4e0388cffe3d 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -827,8 +827,21 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
.private = &cp,
};
down_read(&mm->mmap_sem);
- if (type == CLEAR_REFS_SOFT_DIRTY)
+ if (type == CLEAR_REFS_SOFT_DIRTY) {
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ if (!(vma->vm_flags & VM_SOFTDIRTY))
+ continue;
+ up_read(&mm->mmap_sem);
+ down_write(&mm->mmap_sem);
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ vma->vm_flags &= ~VM_SOFTDIRTY;
+ vma_set_page_prot(vma);
+ }
+ downgrade_write(&mm->mmap_sem);
+ break;
+ }
mmu_notifier_invalidate_range_start(mm, 0, -1);
+ }
for (vma = mm->mmap; vma; vma = vma->vm_next) {
cp.vma = vma;
if (is_vm_hugetlb_page(vma))
@@ -848,10 +861,6 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
continue;
if (type == CLEAR_REFS_MAPPED && !vma->vm_file)
continue;
- if (type == CLEAR_REFS_SOFT_DIRTY) {
- if (vma->vm_flags & VM_SOFTDIRTY)
- vma->vm_flags &= ~VM_SOFTDIRTY;
- }
walk_page_range(vma->vm_start, vma->vm_end,
&clear_refs_walk);
}
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index a88b1b3e7db3..d571e173a990 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -699,11 +699,13 @@ static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh,
chunk->bh[chunk->nr++] = bh;
if (chunk->nr >= CHUNK_SIZE) {
ret = 1;
- if (lock)
+ if (lock) {
spin_unlock(lock);
- fn(chunk);
- if (lock)
+ fn(chunk);
spin_lock(lock);
+ } else {
+ fn(chunk);
+ }
}
return ret;
}
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 7bc20809c99e..2c1036080d52 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -784,7 +784,6 @@ static u64 ufs_bitmap_search(struct super_block *sb,
0x0, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe
};
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- struct ufs_cylinder_group *ucg;
unsigned start, length, loc;
unsigned pos, want, blockmap, mask, end;
u64 result;
@@ -792,8 +791,6 @@ static u64 ufs_bitmap_search(struct super_block *sb,
UFSD("ENTER, cg %u, goal %llu, count %u\n", ucpi->c_cgx,
(unsigned long long)goal, count);
- ucg = ubh_get_ucg(UCPI_UBH(ucpi));
-
if (goal)
start = ufs_dtogd(uspi, goal) >> 3;
else

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