diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 430312ba6e3f3b0b9cee93427feb69b18c9a5ab2..849a9d23c71d5c11080d92edbb705343879aa15e 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -847,4 +847,5 @@ ia32_sys_call_table:
.quad sys_name_to_handle_at
.quad compat_sys_open_by_handle_at
.quad compat_sys_clock_adjtime
+ .quad sys_syncfs
ia32_syscall_end:
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
index ffaf183c619a21f30c24384f8aa9e106e496dfa2..a755ef5e5977540cd52b63e85374e8c4d03e7b8c 100644
--- a/arch/x86/include/asm/unistd_32.h
+++ b/arch/x86/include/asm/unistd_32.h
@@ -349,10 +349,11 @@
#define __NR_name_to_handle_at 341
#define __NR_open_by_handle_at 342
#define __NR_clock_adjtime 343
+#define __NR_syncfs 344
#ifdef __KERNEL__
-#define NR_syscalls 344
+#define NR_syscalls 345
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
index 5466bea670e7e3c14774c998fb0f90d089cb3d8a..160fa76bd5786e680da555ad96d8101a71edc99e 100644
--- a/arch/x86/include/asm/unistd_64.h
+++ b/arch/x86/include/asm/unistd_64.h
@@ -675,6 +675,8 @@ __SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
#define __NR_clock_adjtime 305
__SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
+#define __NR_syncfs 306
+__SYSCALL(__NR_syncfs, sys_syncfs)
#ifndef __NO_STUBS
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index 5f181742e8f91c9510fbac2e0fd0ec7e12daf34d..abce34d5c79de0ce7e6275640a3470ccca9e1805 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -343,3 +343,4 @@ ENTRY(sys_call_table)
.long sys_name_to_handle_at
.long sys_open_by_handle_at
.long sys_clock_adjtime
+ .long sys_syncfs
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 685ecff3ab31728d2362a9be39f98dfbc76947c4..b14cebfd90477ead4b15f0c1583da6393c247de5 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -97,7 +97,7 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
if (!inode)
return -ENOSPC;
mutex_lock(&info->bfs_lock);
- ino = find_first_zero_bit(info->si_imap, info->si_lasti);
+ ino = find_first_zero_bit(info->si_imap, info->si_lasti + 1);
if (ino > info->si_lasti) {
mutex_unlock(&info->bfs_lock);
iput(inode);
diff --git a/fs/compat.c b/fs/compat.c
index c6d31a3bab8863af2c5403e487f1cfc23bf63310..72fe6cda9108a162177e91093514a68854323f5a 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1671,9 +1671,6 @@ int compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
* Update: ERESTARTSYS breaks at least the xview clock binary, so
* I'm trying ERESTARTNOHAND which restart only when you want to.
*/
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
int compat_core_sys_select(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
struct timespec *end_time)
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 1bb547c9cad6d98d5c2816a3bf01d46481a72224..c6bd815dc7943c1035e82cd6010b83ba2b00b584 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -479,6 +479,7 @@ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
struct dentry *root = sb->s_root;
struct pts_fs_info *fsi = DEVPTS_SB(sb);
struct pts_mount_opts *opts = &fsi->mount_opts;
+ int ret = 0;
char s[12];
/* We're supposed to be given the slave end of a pty */
@@ -504,11 +505,14 @@ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
if (!IS_ERR(dentry)) {
d_add(dentry, inode);
fsnotify_create(root->d_inode, dentry);
+ } else {
+ iput(inode);
+ ret = -ENOMEM;
}
mutex_unlock(&root->d_inode->i_mutex);
- return 0;
+ return ret;
}
struct tty_struct *devpts_get_tty(struct inode *pts_inode, int number)
@@ -544,17 +548,12 @@ void devpts_pty_kill(struct tty_struct *tty)
mutex_lock(&root->d_inode->i_mutex);
dentry = d_find_alias(inode);
- if (IS_ERR(dentry))
- goto out;
-
- if (dentry) {
- inode->i_nlink--;
- d_delete(dentry);
- dput(dentry); /* d_alloc_name() in devpts_pty_new() */
- }
+ inode->i_nlink--;
+ d_delete(dentry);
+ dput(dentry); /* d_alloc_name() in devpts_pty_new() */
dput(dentry); /* d_find_alias above */
-out:
+
mutex_unlock(&root->d_inode->i_mutex);
}
diff --git a/fs/exec.c b/fs/exec.c
index ba99e1abb1aa3427aca0e95f116e4deaa85ff793..5e62d26a4fecec227d81700b0b9fd6542b715ad6 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1875,7 +1875,7 @@ static void wait_for_dump_helpers(struct file *file)
/*
- * uhm_pipe_setup
+ * umh_pipe_setup
* helper function to customize the process used
* to collect the core in userspace. Specifically
* it sets up a pipe and installs it as fd 0 (stdin)
diff --git a/fs/fifo.c b/fs/fifo.c
index 4e303c22d5ee53613682530bd1705a0a3cec8382..b1a524d798e720cf18ad7ad4decdab430a2b9c5e 100644
--- a/fs/fifo.c
+++ b/fs/fifo.c
@@ -66,8 +66,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
/* suppress POLLHUP until we have
* seen a writer */
filp->f_version = pipe->w_counter;
- } else
- {
+ } else {
wait_for_partner(inode, &pipe->w_counter);
if(signal_pending(current))
goto err_rd;
diff --git a/fs/inode.c b/fs/inode.c
index 9910c039f026254a9caea134a5a7ac8d40c9c76f..16fefd373fc2570449c97a34697f315536022f19 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1715,7 +1715,7 @@ void init_special_inode(struct inode *inode, umode_t mode, dev_t rdev)
EXPORT_SYMBOL(init_special_inode);
/**
- * Init uid,gid,mode for new inode according to posix standards
+ * inode_init_owner - Init uid,gid,mode for new inode according to posix standards
* @inode: New inode
* @dir: Directory inode
* @mode: mode of the new inode
diff --git a/fs/internal.h b/fs/internal.h
index 17191546d52768691e405da4cc53735d9589e275..8318059b42c6b950b9b3e338ff8c15654ca1798a 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -64,6 +64,7 @@ extern int copy_mount_string(const void __user *, char **);
extern unsigned int mnt_get_count(struct vfsmount *mnt);
extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
+extern struct vfsmount *lookup_mnt(struct path *);
extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
extern void release_mounts(struct list_head *);
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 1eebeb72b20276191fcad6199d8bf0b79a4d9921..1d9b9fcb2db48ec682b4e696bbab9dbb79fd26b9 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -548,6 +548,7 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
{
int error = 0;
int __user *argp = (int __user *)arg;
+ struct inode *inode = filp->f_path.dentry->d_inode;
switch (cmd) {
case FIOCLEX:
@@ -567,13 +568,11 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
break;
case FIOQSIZE:
- if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
- S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
- S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
- loff_t res =
- inode_get_bytes(filp->f_path.dentry->d_inode);
- error = copy_to_user((loff_t __user *)arg, &res,
- sizeof(res)) ? -EFAULT : 0;
+ if (S_ISDIR(inode->i_mode) || S_ISREG(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)) {
+ loff_t res = inode_get_bytes(inode);
+ error = copy_to_user(argp, &res, sizeof(res)) ?
+ -EFAULT : 0;
} else
error = -ENOTTY;
break;
@@ -590,14 +589,10 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
return ioctl_fiemap(filp, arg);
case FIGETBSZ:
- {
- struct inode *inode = filp->f_path.dentry->d_inode;
- int __user *p = (int __user *)arg;
- return put_user(inode->i_sb->s_blocksize, p);
- }
+ return put_user(inode->i_sb->s_blocksize, argp);
default:
- if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
+ if (S_ISREG(inode->i_mode))
error = file_ioctl(filp, cmd, arg);
else
error = vfs_ioctl(filp, cmd, arg);
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index c0b8344db0c65129d08d6a299a051fed0ce430fd..bf1c68009ffd8b64001ecdd4d9f266654d2a3656 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -98,7 +98,7 @@ char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen)
namelen--;
buflen -= namelen;
if (buflen < 0) {
- spin_lock(&dentry->d_lock);
+ spin_unlock(&dentry->d_lock);
rcu_read_unlock();
goto Elong;
}
@@ -108,7 +108,7 @@ char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen)
rcu_read_unlock();
return end;
Elong_unlock:
- spin_lock(&dentry->d_lock);
+ spin_unlock(&dentry->d_lock);
rcu_read_unlock();
if (read_seqretry(&rename_lock, seq))
goto rename_retry;
diff --git a/fs/open.c b/fs/open.c
index f83ca80cc59a1d72c8b933d7562efc853cfe3f8c..b52cf013ffa145de32e5c641aba7a3625de8cc29 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -835,17 +835,8 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags,
validate_creds(cred);
- /*
- * We must always pass in a valid mount pointer. Historically
- * callers got away with not passing it, but we must enforce this at
- * the earliest possible point now to avoid strange problems deep in the
- * filesystem stack.
- */
- if (!mnt) {
- printk(KERN_WARNING "%s called with NULL vfsmount\n", __func__);
- dump_stack();
- return ERR_PTR(-EINVAL);
- }
+ /* We must always pass in a valid mount pointer. */
+ BUG_ON(!mnt);
error = -ENFILE;
f = get_empty_filp();
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 08342232cb1c4f82ddb07db1fc4c8fcb9908d72b..f777f2902c499d89183fb298a7d58cf0e224e9de 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -73,11 +73,16 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry)
struct pstore_private *p = dentry->d_inode->i_private;
p->erase(p->id);
- kfree(p);
return simple_unlink(dir, dentry);
}
+static void pstore_evict_inode(struct inode *inode)
+{
+ end_writeback(inode);
+ kfree(inode->i_private);
+}
+
static const struct inode_operations pstore_dir_inode_operations = {
.lookup = simple_lookup,
.unlink = pstore_unlink,
@@ -110,6 +115,7 @@ static struct inode *pstore_get_inode(struct super_block *sb,
static const struct super_operations pstore_ops = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
+ .evict_inode = pstore_evict_inode,
.show_options = generic_show_options,
};
diff --git a/fs/select.c b/fs/select.c
index e56560d2b08a8db433f890f7a8baa344f50a3df1..d33418fdc858fbbe7f929d692dae1533c2e9a271 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -517,9 +517,6 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
* Update: ERESTARTSYS breaks at least the xview clock binary, so
* I'm trying ERESTARTNOHAND which restart only when you want to.
*/
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
fd_set __user *exp, struct timespec *end_time)
{
diff --git a/fs/sync.c b/fs/sync.c
index ba76b9623e7e809f6b3c5e6223020836069dc4ab..92ca208777d562e64bfc769dc41a326f7c3da84e 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -7,6 +7,7 @@
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/namei.h>
#include <linux/sched.h>
#include <linux/writeback.h>
#include <linux/syscalls.h>
@@ -128,6 +129,29 @@ void emergency_sync(void)
}
}
+/*
+ * sync a single super
+ */
+SYSCALL_DEFINE1(syncfs, int, fd)
+{
+ struct file *file;
+ struct super_block *sb;
+ int ret;
+ int fput_needed;
+
+ file = fget_light(fd, &fput_needed);
+ if (!file)
+ return -EBADF;
+ sb = file->f_dentry->d_sb;
+
+ down_read(&sb->s_umount);
+ ret = sync_filesystem(sb);
+ up_read(&sb->s_umount);
+
+ fput_light(file, fput_needed);
+ return ret;
+}
+
/**
* vfs_fsync_range - helper to sync a range of data & metadata to disk
* @file: file to sync
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index d94f447c667a6ea61857e7ba968e7cb09b40fac9..176b825add52691cb5abb2b52780dd75923d3377 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -652,9 +652,11 @@ __SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
#define __NR_clock_adjtime 266
__SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
+#define __NR_syncfs 264
+__SYSCALL(__NR_syncfs, sys_syncfs)
#undef __NR_syscalls
-#define __NR_syscalls 267
+#define __NR_syscalls 268
/*
* All syscalls below here should go away really,
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 1a87760d65322b2d0528886b3232d2707f725532..f2afed4fa9454776c79611d52755121dff749342 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -416,7 +416,6 @@ static inline bool d_mountpoint(struct dentry *dentry)
return dentry->d_flags & DCACHE_MOUNTED;
}
-extern struct vfsmount *lookup_mnt(struct path *);
extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
extern int sysctl_vfs_cache_pressure;
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 1f5c18e6f4f17bedfbd38e64da3cc112d1cb90bb..83ecc1749ef6153581d295706d6c4768c11931e0 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -825,6 +825,7 @@ asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags
asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
u64 mask, int fd,
const char __user *pathname);
+asmlinkage long sys_syncfs(int fd);
int kernel_execve(const char *filename, const char *const argv[], const char *const envp[]);