Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

3ae5080f · Linus Torvalds <[email protected]> · 2009-03-27 16:23:12 -07:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (37 commits)
  fs: avoid I_NEW inodes
  Merge code for single and multiple-instance mounts
  Remove get_init_pts_sb()
  Move common mknod_ptmx() calls into caller
  Parse mount options just once and copy them to super block
  Unroll essentials of do_remount_sb() into devpts
  vfs: simple_set_mnt() should return void
  fs: move bdev code out of buffer.c
  constify dentry_operations: rest
  constify dentry_operations: configfs
  constify dentry_operations: sysfs
  constify dentry_operations: JFS
  constify dentry_operations: OCFS2
  constify dentry_operations: GFS2
  constify dentry_operations: FAT
  constify dentry_operations: FUSE
  constify dentry_operations: procfs
  constify dentry_operations: ecryptfs
  constify dentry_operations: CIFS
  constify dentry_operations: AFS
  ...

Commit: 3ae5080f4c2e293229508dabe7c8a90af4e4c460
Parents: 2c9e15a0 · aabb8fdb

Merge commit. Changes below are compared with the first parent: 2c9e15a0.

Changes

93 files changed · +603 −574

File	Status	Add	Del	Content
arch/alpha/kernel/entry.S	modified	+2	−1	View file
arch/alpha/kernel/osf_sys.c	modified	+0	−2	View file
arch/ia64/ia32/ia32_entry.S	modified	+1	−1	View file
arch/ia64/kernel/perfmon.c	modified	+1	−1	View file
arch/mips/kernel/linux32.c	modified	+0	−34	View file
arch/mips/kernel/scall64-n32.S	modified	+1	−1	View file
arch/mips/kernel/scall64-o32.S	modified	+1	−1	View file
arch/parisc/kernel/syscall_table.S	modified	+1	−1	View file
arch/powerpc/include/asm/systbl.h	modified	+1	−1	View file
arch/s390/kernel/compat_wrapper.S	modified	+1	−1	View file
arch/x86/ia32/ia32entry.S	modified	+1	−1	View file
arch/x86/ia32/sys_ia32.c	modified	+0	−22	View file
arch/x86/include/asm/ia32.h	modified	+0	−7	View file
arch/x86/include/asm/sys_ia32.h	modified	+0	−2	View file
drivers/mtd/mtdsuper.c	modified	+5	−2	View file
fs/9p/v9fs_vfs.h	modified	+2	−2	View file
fs/9p/vfs_dentry.c	modified	+2	−2	View file
fs/9p/vfs_super.c	modified	+3	−2	View file
fs/adfs/adfs.h	modified	+1	−1	View file
fs/adfs/dir.c	modified	+1	−1	View file
fs/affs/affs.h	modified	+1	−2	View file
fs/affs/amigaffs.c	modified	+6	−2	View file
fs/affs/namei.c	modified	+2	−2	View file
fs/afs/dir.c	modified	+1	−1	View file
fs/anon_inodes.c	modified	+1	−1	View file
fs/autofs/root.c	modified	+1	−1	View file
fs/autofs4/inode.c	modified	+1	−1	View file
fs/autofs4/root.c	modified	+2	−2	View file
fs/block_dev.c	modified	+146	−0	View file
fs/buffer.c	modified	+0	−145	View file
fs/cifs/cifsfs.c	modified	+2	−1	View file
fs/cifs/cifsfs.h	modified	+2	−2	View file
fs/cifs/dir.c	modified	+2	−2	View file
fs/coda/dir.c	modified	+1	−1	View file
fs/compat.c	modified	+28	−0	View file
fs/configfs/dir.c	modified	+1	−1	View file
fs/dcache.c	modified	+18	−30	View file
fs/devpts/inode.c	modified	+46	−142	View file
fs/drop_caches.c	modified	+1	−1	View file
fs/ecryptfs/dentry.c	modified	+1	−1	View file
fs/ecryptfs/ecryptfs_kernel.h	modified	+1	−1	View file
fs/fat/namei_msdos.c	modified	+1	−1	View file
fs/fat/namei_vfat.c	modified	+2	−2	View file
fs/fuse/dir.c	modified	+1	−1	View file
fs/fuse/fuse_i.h	modified	+1	−1	View file
fs/gfs2/ops_dentry.c	modified	+1	−1	View file
fs/gfs2/super.h	modified	+1	−1	View file
fs/hfs/hfs_fs.h	modified	+1	−1	View file
fs/hfs/sysdep.c	modified	+1	−1	View file
fs/hfsplus/hfsplus_fs.h	modified	+1	−1	View file
fs/hfsplus/inode.c	modified	+1	−1	View file
fs/hostfs/hostfs_kern.c	modified	+2	−2	View file
fs/hpfs/dentry.c	modified	+1	−1	View file
fs/inode.c	modified	+2	−0	View file
fs/isofs/inode.c	modified	+1	−1	View file
fs/jfs/jfs_inode.h	modified	+1	−1	View file
fs/jfs/namei.c	modified	+2	−2	View file
fs/libfs.c	modified	+3	−2	View file
fs/namei.c	modified	+12	−14	View file
fs/namespace.c	modified	+1	−2	View file
fs/ncpfs/dir.c	modified	+2	−2	View file
fs/nfs/dir.c	modified	+2	−2	View file
fs/nfs/nfs4_fs.h	modified	+1	−1	View file
fs/notify/inotify/inotify.c	modified	+8	−8	View file
fs/ocfs2/dcache.c	modified	+1	−1	View file
fs/ocfs2/dcache.h	modified	+1	−1	View file
fs/pipe.c	modified	+1	−6	View file
fs/proc/base.c	modified	+3	−3	View file
fs/proc/generic.c	modified	+1	−1	View file
fs/proc/proc_sysctl.c	modified	+2	−2	View file
fs/proc/root.c	modified	+2	−1	View file
fs/quota/dquot.c	modified	+8	−2	View file
fs/reiserfs/xattr.c	modified	+1	−1	View file
fs/smbfs/dir.c	modified	+2	−2	View file
fs/super.c	modified	+6	−3	View file
fs/sysfs/dir.c	modified	+1	−1	View file
fs/sysv/namei.c	modified	+1	−1	View file
fs/sysv/sysv.h	modified	+1	−1	View file
fs/ubifs/super.c	modified	+2	−1	View file
fs/ufs/inode.c	modified	+18	−21	View file
fs/ufs/namei.c	modified	+1	−1	View file
fs/ufs/super.c	modified	+11	−0	View file
fs/ufs/ufs.h	modified	+1	−1	View file
include/linux/buffer_head.h	modified	+0	−7	View file
include/linux/compat.h	modified	+8	−0	View file
include/linux/dcache.h	modified	+1	−1	View file
include/linux/fs.h	modified	+185	−35	View file
include/linux/ncp_fs.h	modified	+1	−1	View file
include/linux/nfs_fs.h	modified	+1	−1	View file
include/linux/nfs_xdr.h	modified	+1	−1	View file
kernel/cgroup.c	modified	+3	−2	View file
net/socket.c	modified	+1	−1	View file
net/sunrpc/rpc_pipe.c	modified	+1	−1	View file

Only the first 600 diff lines are shown. Download the complete patch.

arch/alpha/kernel/entry.S

View file

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index e4a54b6..b45d913 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -903,8 +903,9 @@ sys_alpha_pipe:
 	stq	$26, 0($sp)
 	.prologue 0
 
+	mov	$31, $17
 	lda	$16, 8($sp)
-	jsr	$26, do_pipe
+	jsr	$26, do_pipe_flags
 
 	ldq	$26, 0($sp)
 	bne	$0, 1f

arch/alpha/kernel/osf_sys.c

View file

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index ae41f09..42ee059 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -46,8 +46,6 @@
 #include <asm/hwrpb.h>
 #include <asm/processor.h>
 
-extern int do_pipe(int *);
-
 /*
  * Brk needs to return an error.  Still support Linux's brk(0) query idiom,
  * which OSF programs just shouldn't be doing.  We're still not quite

arch/ia64/ia32/ia32_entry.S

View file

diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S
index a46f839..af9405c 100644
--- a/arch/ia64/ia32/ia32_entry.S
+++ b/arch/ia64/ia32/ia32_entry.S
@@ -240,7 +240,7 @@ ia32_syscall_table:
 	data8 sys_ni_syscall
 	data8 sys_umask		  /* 60 */
 	data8 sys_chroot
-	data8 sys_ustat
+	data8 compat_sys_ustat
 	data8 sys_dup2
 	data8 sys_getppid
 	data8 sys_getpgrp	  /* 65 */

arch/ia64/kernel/perfmon.c

View file

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 0e49975..5c0f408 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2196,7 +2196,7 @@ pfmfs_delete_dentry(struct dentry *dentry)
 	return 1;
 }
 
-static struct dentry_operations pfmfs_dentry_operations = {
+static const struct dentry_operations pfmfs_dentry_operations = {
 	.d_delete = pfmfs_delete_dentry,
 };
 

arch/mips/kernel/linux32.c

View file

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 49aac6e..2a47271 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -355,40 +355,6 @@ SYSCALL_DEFINE1(32_personality, unsigned long, personality)
 	return ret;
 }
 
-/* ustat compatibility */
-struct ustat32 {
-	compat_daddr_t	f_tfree;
-	compat_ino_t	f_tinode;
-	char		f_fname[6];
-	char		f_fpack[6];
-};
-
-extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
-
-SYSCALL_DEFINE2(32_ustat, dev_t, dev, struct ustat32 __user *, ubuf32)
-{
-	int err;
-	struct ustat tmp;
-	struct ustat32 tmp32;
-	mm_segment_t old_fs = get_fs();
-
-	set_fs(KERNEL_DS);
-	err = sys_ustat(dev, (struct ustat __user *)&tmp);
-	set_fs(old_fs);
-
-	if (err)
-		goto out;
-
-	memset(&tmp32, 0, sizeof(struct ustat32));
-	tmp32.f_tfree = tmp.f_tfree;
-	tmp32.f_tinode = tmp.f_tinode;
-
-	err = copy_to_user(ubuf32, &tmp32, sizeof(struct ustat32)) ? -EFAULT : 0;
-
-out:
-	return err;
-}
-
 SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
 	compat_off_t __user *, offset, s32, count)
 {

arch/mips/kernel/scall64-n32.S

View file

diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 7438e92..f61d6b0 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -253,7 +253,7 @@ EXPORT(sysn32_call_table)
 	PTR	compat_sys_utime		/* 6130 */
 	PTR	sys_mknod
 	PTR	sys_32_personality
-	PTR	sys_32_ustat
+	PTR	compat_sys_ustat
 	PTR	compat_sys_statfs
 	PTR	compat_sys_fstatfs		/* 6135 */
 	PTR	sys_sysfs

arch/mips/kernel/scall64-o32.S

View file

diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index b0fef4f..60997f1 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -265,7 +265,7 @@ sys_call_table:
 	PTR	sys_olduname
 	PTR	sys_umask			/* 4060 */
 	PTR	sys_chroot
-	PTR	sys_32_ustat
+	PTR	compat_sys_ustat
 	PTR	sys_dup2
 	PTR	sys_getppid
 	PTR	sys_getpgrp			/* 4065 */

arch/parisc/kernel/syscall_table.S

View file

diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 303d2b6..03b9a01 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -130,7 +130,7 @@
 	ENTRY_OURS(newuname)
 	ENTRY_SAME(umask)		/* 60 */
 	ENTRY_SAME(chroot)
-	ENTRY_SAME(ustat)
+	ENTRY_COMP(ustat)
 	ENTRY_SAME(dup2)
 	ENTRY_SAME(getppid)
 	ENTRY_SAME(getpgrp)		/* 65 */

arch/powerpc/include/asm/systbl.h

View file

diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 72353f6..fe16649 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -65,7 +65,7 @@ SYSCALL(ni_syscall)
 SYSX(sys_ni_syscall,sys_olduname, sys_olduname)
 COMPAT_SYS_SPU(umask)
 SYSCALL_SPU(chroot)
-SYSCALL(ustat)
+COMPAT_SYS(ustat)
 SYSCALL_SPU(dup2)
 SYSCALL_SPU(getppid)
 SYSCALL_SPU(getpgrp)

arch/s390/kernel/compat_wrapper.S

View file

diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 62c706e..87cf5a7 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -252,7 +252,7 @@ sys32_chroot_wrapper:
 sys32_ustat_wrapper:
 	llgfr	%r2,%r2			# dev_t
 	llgtr	%r3,%r3			# struct ustat *
-	jg	sys_ustat
+	jg	compat_sys_ustat
 
 	.globl	sys32_dup2_wrapper
 sys32_dup2_wrapper:

arch/x86/ia32/ia32entry.S

View file

diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 5a0d76d..8ef8876 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -557,7 +557,7 @@ ia32_sys_call_table:
 	.quad sys32_olduname
 	.quad sys_umask		/* 60 */
 	.quad sys_chroot
-	.quad sys32_ustat
+	.quad compat_sys_ustat
 	.quad sys_dup2
 	.quad sys_getppid
 	.quad sys_getpgrp		/* 65 */

arch/x86/ia32/sys_ia32.c

View file

diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index 6c0d7f6..efac92f 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -638,28 +638,6 @@ long sys32_uname(struct old_utsname __user *name)
 	return err ? -EFAULT : 0;
 }
 
-long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
-{
-	struct ustat u;
-	mm_segment_t seg;
-	int ret;
-
-	seg = get_fs();
-	set_fs(KERNEL_DS);
-	ret = sys_ustat(dev, (struct ustat __user *)&u);
-	set_fs(seg);
-	if (ret < 0)
-		return ret;
-
-	if (!access_ok(VERIFY_WRITE, u32p, sizeof(struct ustat32)) ||
-	    __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
-	    __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
-	    __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
-	    __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
-		ret = -EFAULT;
-	return ret;
-}
-
 asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
 			     compat_uptr_t __user *envp, struct pt_regs *regs)
 {

arch/x86/include/asm/ia32.h

View file

diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h
index 50ca486..1f7e625 100644
--- a/arch/x86/include/asm/ia32.h
+++ b/arch/x86/include/asm/ia32.h
@@ -129,13 +129,6 @@ typedef struct compat_siginfo {
 	} _sifields;
 } compat_siginfo_t;
 
-struct ustat32 {
-	__u32			f_tfree;
-	compat_ino_t		f_tinode;
-	char			f_fname[6];
-	char			f_fpack[6];
-};
-
 #define IA32_STACK_TOP IA32_PAGE_OFFSET
 
 #ifdef __KERNEL__

arch/x86/include/asm/sys_ia32.h

View file

diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h
index ffb08be..72a6dcd 100644
--- a/arch/x86/include/asm/sys_ia32.h
+++ b/arch/x86/include/asm/sys_ia32.h
@@ -70,8 +70,6 @@ struct old_utsname;
 asmlinkage long sys32_olduname(struct oldold_utsname __user *);
 long sys32_uname(struct old_utsname __user *);
 
-long sys32_ustat(unsigned, struct ustat32 __user *);
-
 asmlinkage long sys32_execve(char __user *, compat_uptr_t __user *,
 			     compat_uptr_t __user *, struct pt_regs *);
 asmlinkage long sys32_clone(unsigned int, unsigned int, struct pt_regs *);

drivers/mtd/mtdsuper.c

View file

diff --git a/drivers/mtd/mtdsuper.c b/drivers/mtd/mtdsuper.c
index 00d46e1..92285d0 100644
--- a/drivers/mtd/mtdsuper.c
+++ b/drivers/mtd/mtdsuper.c
@@ -81,13 +81,16 @@ static int get_sb_mtd_aux(struct file_system_type *fs_type, int flags,
 
 	/* go */
 	sb->s_flags |= MS_ACTIVE;
-	return simple_set_mnt(mnt, sb);
+	simple_set_mnt(mnt, sb);
+
+	return 0;
 
 	/* new mountpoint for an already mounted superblock */
 already_mounted:
 	DEBUG(1, "MTDSB: Device %d (\"%s\") is already mounted\n",
 	      mtd->index, mtd->name);
-	ret = simple_set_mnt(mnt, sb);
+	simple_set_mnt(mnt, sb);
+	ret = 0;
 	goto out_put;
 
 out_error:

fs/9p/v9fs_vfs.h

View file

diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index c295ba7..f0c7de7 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -41,8 +41,8 @@ extern struct file_system_type v9fs_fs_type;
 extern const struct address_space_operations v9fs_addr_operations;
 extern const struct file_operations v9fs_file_operations;
 extern const struct file_operations v9fs_dir_operations;
-extern struct dentry_operations v9fs_dentry_operations;
-extern struct dentry_operations v9fs_cached_dentry_operations;
+extern const struct dentry_operations v9fs_dentry_operations;
+extern const struct dentry_operations v9fs_cached_dentry_operations;
 
 struct inode *v9fs_get_inode(struct super_block *sb, int mode);
 ino_t v9fs_qid2ino(struct p9_qid *qid);

fs/9p/vfs_dentry.c

View file

diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index 06dcc7c..d743252 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -104,12 +104,12 @@ void v9fs_dentry_release(struct dentry *dentry)
 	}
 }
 
-struct dentry_operations v9fs_cached_dentry_operations = {
+const struct dentry_operations v9fs_cached_dentry_operations = {
 	.d_delete = v9fs_cached_dentry_delete,
 	.d_release = v9fs_dentry_release,
 };
 
-struct dentry_operations v9fs_dentry_operations = {
+const struct dentry_operations v9fs_dentry_operations = {
 	.d_delete = v9fs_dentry_delete,
 	.d_release = v9fs_dentry_release,
 };

fs/9p/vfs_super.c

View file

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 93212e4..5f8ab8a 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -168,8 +168,9 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 	p9stat_free(st);
 	kfree(st);
 
-P9_DPRINTK(P9_DEBUG_VFS, " return simple set mount\n");
-	return simple_set_mnt(mnt, sb);
+P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
+	simple_set_mnt(mnt, sb);
+	return 0;
 
 release_sb:
 	if (sb) {

fs/adfs/adfs.h

View file

diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 8311575..e0a85db 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -86,7 +86,7 @@ void __adfs_error(struct super_block *sb, const char *function,
 /* dir_*.c */
 extern const struct inode_operations adfs_dir_inode_operations;
 extern const struct file_operations adfs_dir_operations;
-extern struct dentry_operations adfs_dentry_operations;
+extern const struct dentry_operations adfs_dentry_operations;
 extern struct adfs_dir_ops adfs_f_dir_ops;
 extern struct adfs_dir_ops adfs_fplus_dir_ops;
 

fs/adfs/dir.c

View file

diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 85a30e9..e867ccf 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -263,7 +263,7 @@ adfs_compare(struct dentry *parent, struct qstr *entry, struct qstr *name)
 	return 0;
 }
 
-struct dentry_operations adfs_dentry_operations = {
+const struct dentry_operations adfs_dentry_operations = {
 	.d_hash		= adfs_hash,
 	.d_compare	= adfs_compare,
 };

fs/affs/affs.h

View file

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index e9ec915..1a2d5e3 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -199,8 +199,7 @@ extern const struct address_space_operations	 affs_symlink_aops;
 extern const struct address_space_operations	 affs_aops;
 extern const struct address_space_operations	 affs_aops_ofs;
 
-extern struct dentry_operations	 affs_dentry_operations;
-extern struct dentry_operations	 affs_dentry_operations_intl;
+extern const struct dentry_operations	 affs_dentry_operations;
 
 static inline void
 affs_set_blocksize(struct super_block *sb, int size)

fs/affs/amigaffs.c

View file

diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 8055730..7d0f0a3 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -179,14 +179,18 @@ affs_remove_link(struct dentry *dentry)
 		affs_lock_dir(dir);
 		affs_fix_dcache(dentry, link_ino);
 		retval = affs_remove_hash(dir, link_bh);
-		if (retval)
+		if (retval) {
+			affs_unlock_dir(dir);
 			goto done;
+		}
 		mark_buffer_dirty_inode(link_bh, inode);
 
 		memcpy(AFFS_TAIL(sb, bh)->name, AFFS_TAIL(sb, link_bh)->name, 32);
 		retval = affs_insert_hash(dir, bh);
-		if (retval)
+		if (retval) {
+			affs_unlock_dir(dir);
 			goto done;
+		}
 		mark_buffer_dirty_inode(bh, inode);
 
 		affs_unlock_dir(dir);

fs/affs/namei.c

View file

diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index cfcf1b6..960d336 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -19,12 +19,12 @@ static int	 affs_intl_toupper(int ch);
 static int	 affs_intl_hash_dentry(struct dentry *, struct qstr *);
 static int       affs_intl_compare_dentry(struct dentry *, struct qstr *, struct qstr *);
 
-struct dentry_operations affs_dentry_operations = {
+const struct dentry_operations affs_dentry_operations = {
 	.d_hash		= affs_hash_dentry,
 	.d_compare	= affs_compare_dentry,
 };
 
-static struct dentry_operations affs_intl_dentry_operations = {
+static const struct dentry_operations affs_intl_dentry_operations = {
 	.d_hash		= affs_intl_hash_dentry,
 	.d_compare	= affs_intl_compare_dentry,
 };

fs/afs/dir.c

View file

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 99cf390..9bd7577 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -62,7 +62,7 @@ const struct inode_operations afs_dir_inode_operations = {
 	.setattr	= afs_setattr,
 };
 
-static struct dentry_operations afs_fs_dentry_operations = {
+static const struct dentry_operations afs_fs_dentry_operations = {
 	.d_revalidate	= afs_d_revalidate,
 	.d_delete	= afs_d_delete,
 	.d_release	= afs_d_release,

fs/anon_inodes.c

View file

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 3bbdb9d..1dd96d4 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -48,7 +48,7 @@ static struct file_system_type anon_inode_fs_type = {
 	.get_sb		= anon_inodefs_get_sb,
 	.kill_sb	= kill_anon_super,
 };
-static struct dentry_operations anon_inodefs_dentry_operations = {
+static const struct dentry_operations anon_inodefs_dentry_operations = {
 	.d_delete	= anon_inodefs_delete_dentry,
 };
 

fs/autofs/root.c

View file

diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index 8aacade..4a1401c 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -192,7 +192,7 @@ static int autofs_revalidate(struct dentry * dentry, struct nameidata *nd)
 	return 1;
 }
 
-static struct dentry_operations autofs_dentry_operations = {
+static const struct dentry_operations autofs_dentry_operations = {
 	.d_revalidate	= autofs_revalidate,
 };
 

fs/autofs4/inode.c

View file

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 716e12b..69c8142 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -310,7 +310,7 @@ static struct autofs_info *autofs4_mkroot(struct autofs_sb_info *sbi)
 	return ino;
 }
 
-static struct dentry_operations autofs4_sb_dentry_operations = {
+static const struct dentry_operations autofs4_sb_dentry_operations = {
 	.d_release      = autofs4_dentry_release,
 };
 

fs/autofs4/root.c

View file

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 2a41c2a..74b1469 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -349,13 +349,13 @@ void autofs4_dentry_release(struct dentry *de)
 }
 
 /* For dentries of directories in the root dir */
-static struct dentry_operations autofs4_root_dentry_operations = {
+static const struct dentry_operations autofs4_root_dentry_operations = {
 	.d_revalidate	= autofs4_revalidate,
 	.d_release	= autofs4_dentry_release,
 };
 
 /* For other dentries */
-static struct dentry_operations autofs4_dentry_operations = {
+static const struct dentry_operations autofs4_dentry_operations = {
 	.d_revalidate	= autofs4_revalidate,
 	.d_release	= autofs4_dentry_release,
 };

fs/block_dev.c

View file

diff --git a/fs/block_dev.c b/fs/block_dev.c
index b3c1eff..8c3c689 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/blkpg.h>
 #include <linux/buffer_head.h>
+#include <linux/pagevec.h>
 #include <linux/writeback.h>
 #include <linux/mpage.h>
 #include <linux/mount.h>
@@ -174,6 +175,151 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
 				iov, offset, nr_segs, blkdev_get_blocks, NULL);
 }
 
+/*
+ * Write out and wait upon all the dirty data associated with a block
+ * device via its mapping.  Does not take the superblock lock.
+ */
+int sync_blockdev(struct block_device *bdev)
+{
+	int ret = 0;
+
+	if (bdev)
+		ret = filemap_write_and_wait(bdev->bd_inode->i_mapping);
+	return ret;
+}
+EXPORT_SYMBOL(sync_blockdev);
+
+/*
+ * Write out and wait upon all dirty data associated with this
+ * device.   Filesystem data as well as the underlying block
+ * device.  Takes the superblock lock.
+ */
+int fsync_bdev(struct block_device *bdev)
+{
+	struct super_block *sb = get_super(bdev);
+	if (sb) {
+		int res = fsync_super(sb);
+		drop_super(sb);
+		return res;
+	}
+	return sync_blockdev(bdev);
+}
+
+/**
+ * freeze_bdev  --  lock a filesystem and force it into a consistent state
+ * @bdev:	blockdevice to lock
+ *
+ * This takes the block device bd_mount_sem to make sure no new mounts
+ * happen on bdev until thaw_bdev() is called.
+ * If a superblock is found on this device, we take the s_umount semaphore
+ * on it to make sure nobody unmounts until the snapshot creation is done.
+ * The reference counter (bd_fsfreeze_count) guarantees that only the last
+ * unfreeze process can unfreeze the frozen filesystem actually when multiple
+ * freeze requests arrive simultaneously. It counts up in freeze_bdev() and
+ * count down in thaw_bdev(). When it becomes 0, thaw_bdev() will unfreeze
+ * actually.
+ */
+struct super_block *freeze_bdev(struct block_device *bdev)
+{
+	struct super_block *sb;
+	int error = 0;
+
+	mutex_lock(&bdev->bd_fsfreeze_mutex);
+	if (bdev->bd_fsfreeze_count > 0) {
+		bdev->bd_fsfreeze_count++;
+		sb = get_super(bdev);
+		mutex_unlock(&bdev->bd_fsfreeze_mutex);
+		return sb;
+	}
+	bdev->bd_fsfreeze_count++;
+
+	down(&bdev->bd_mount_sem);
+	sb = get_super(bdev);
+	if (sb && !(sb->s_flags & MS_RDONLY)) {
+		sb->s_frozen = SB_FREEZE_WRITE;
+		smp_wmb();
+
+		__fsync_super(sb);
+
+		sb->s_frozen = SB_FREEZE_TRANS;
+		smp_wmb();
+
+		sync_blockdev(sb->s_bdev);
+
+		if (sb->s_op->freeze_fs) {
+			error = sb->s_op->freeze_fs(sb);
+			if (error) {
+				printk(KERN_ERR
+					"VFS:Filesystem freeze failed\n");
+				sb->s_frozen = SB_UNFROZEN;
+				drop_super(sb);
+				up(&bdev->bd_mount_sem);
+				bdev->bd_fsfreeze_count--;
+				mutex_unlock(&bdev->bd_fsfreeze_mutex);
+				return ERR_PTR(error);
+			}
+		}
+	}
+
+	sync_blockdev(bdev);
+	mutex_unlock(&bdev->bd_fsfreeze_mutex);
+
+	return sb;	/* thaw_bdev releases s->s_umount and bd_mount_sem */
+}
+EXPORT_SYMBOL(freeze_bdev);
+
+/**
+ * thaw_bdev  -- unlock filesystem
+ * @bdev:	blockdevice to unlock
+ * @sb:		associated superblock
+ *
+ * Unlocks the filesystem and marks it writeable again after freeze_bdev().
+ */
+int thaw_bdev(struct block_device *bdev, struct super_block *sb)
+{
+	int error = 0;
+
+	mutex_lock(&bdev->bd_fsfreeze_mutex);
+	if (!bdev->bd_fsfreeze_count) {
+		mutex_unlock(&bdev->bd_fsfreeze_mutex);
+		return -EINVAL;
+	}
+
+	bdev->bd_fsfreeze_count--;
+	if (bdev->bd_fsfreeze_count > 0) {
+		if (sb)
+			drop_super(sb);