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Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse source 
Pull mount flag updates from Al Viro:
 "Another chunk of fmount preparations from dhowells; only trivial
  conflicts for that part. It separates MS_... bits (very grotty
  mount(2) ABI) from the struct super_block ->s_flags (kernel-internal,
  only a small subset of MS_... stuff).

  This does *not* convert the filesystems to new constants; only the
  infrastructure is done here. The next step in that series is where the
  conflicts would be; that's the conversion of filesystems. It's purely
  mechanical and it's better done after the merge, so if you could run
  something like

	list=$(for i in MS_RDONLY MS_NOSUID MS_NODEV MS_NOEXEC MS_SYNCHRONOUS MS_MANDLOCK MS_DIRSYNC MS_NOATIME MS_NODIRATIME MS_SILENT MS_POSIXACL MS_KERNMOUNT MS_I_VERSION MS_LAZYTIME; do git grep -l $i fs drivers/staging/lustre drivers/mtd ipc mm include/linux; done|sort|uniq|grep -v '^fs/namespace.c$')

	sed -i -e 's/\<MS_RDONLY\>/SB_RDONLY/g' \
	        -e 's/\<MS_NOSUID\>/SB_NOSUID/g' \
	        -e 's/\<MS_NODEV\>/SB_NODEV/g' \
	        -e 's/\<MS_NOEXEC\>/SB_NOEXEC/g' \
	        -e 's/\<MS_SYNCHRONOUS\>/SB_SYNCHRONOUS/g' \
	        -e 's/\<MS_MANDLOCK\>/SB_MANDLOCK/g' \
	        -e 's/\<MS_DIRSYNC\>/SB_DIRSYNC/g' \
	        -e 's/\<MS_NOATIME\>/SB_NOATIME/g' \
	        -e 's/\<MS_NODIRATIME\>/SB_NODIRATIME/g' \
	        -e 's/\<MS_SILENT\>/SB_SILENT/g' \
	        -e 's/\<MS_POSIXACL\>/SB_POSIXACL/g' \
	        -e 's/\<MS_KERNMOUNT\>/SB_KERNMOUNT/g' \
	        -e 's/\<MS_I_VERSION\>/SB_I_VERSION/g' \
	        -e 's/\<MS_LAZYTIME\>/SB_LAZYTIME/g' \
	        $list

  and commit it with something along the lines of 'convert filesystems
  away from use of MS_... constants' as commit message, it would save a
  quite a bit of headache next cycle"

* 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  VFS: Differentiate mount flags (MS_*) from internal superblock flags
  VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb)
  vfs: Add sb_rdonly(sb) to query the MS_RDONLY flag on s_flags
This commit is contained in:
Linus Torvalds 2017-09-14 18:54:01 -07:00
commit 0f0d12728e
76 changed files with 314 additions and 296 deletions
Download patch file Download diff file Expand all files Collapse all files

4
fs/nilfs2/inode.c
View file

@ -174,7 +174,7 @@ static int nilfs_writepages(struct address_space *mapping,
struct inode *inode = mapping->host;
int err = 0;
if (inode->i_sb->s_flags & MS_RDONLY) {
if (sb_rdonly(inode->i_sb)) {
nilfs_clear_dirty_pages(mapping, false);
return -EROFS;
}
@ -191,7 +191,7 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
struct inode *inode = page->mapping->host;
int err;
if (inode->i_sb->s_flags & MS_RDONLY) {
if (sb_rdonly(inode->i_sb)) {
/*
* It means that filesystem was remounted in read-only
* mode because of error or metadata corruption. But we

2
fs/nilfs2/mdt.c
View file

@ -413,7 +413,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
struct super_block *sb;
int err = 0;
if (inode && (inode->i_sb->s_flags & MS_RDONLY)) {
if (inode && sb_rdonly(inode->i_sb)) {
/*
* It means that filesystem was remounted in read-only
* mode because of error or metadata corruption. But we

19
fs/nilfs2/super.c
View file

@ -136,7 +136,7 @@ void __nilfs_error(struct super_block *sb, const char *function,
va_end(args);
if (!(sb->s_flags & MS_RDONLY)) {
if (!sb_rdonly(sb)) {
nilfs_set_error(sb);
if (nilfs_test_opt(nilfs, ERRORS_RO)) {
@ -478,7 +478,7 @@ static void nilfs_put_super(struct super_block *sb)
nilfs_detach_log_writer(sb);
if (!(sb->s_flags & MS_RDONLY)) {
if (!sb_rdonly(sb)) {
down_write(&nilfs->ns_sem);
nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
@ -578,7 +578,7 @@ static int nilfs_freeze(struct super_block *sb)
struct the_nilfs *nilfs = sb->s_fs_info;
int err;
if (sb->s_flags & MS_RDONLY)
if (sb_rdonly(sb))
return 0;
/* Mark super block clean */
@ -592,7 +592,7 @@ static int nilfs_unfreeze(struct super_block *sb)
{
struct the_nilfs *nilfs = sb->s_fs_info;
if (sb->s_flags & MS_RDONLY)
if (sb_rdonly(sb))
return 0;
down_write(&nilfs->ns_sem);
@ -898,7 +898,7 @@ int nilfs_check_feature_compatibility(struct super_block *sb,
}
features = le64_to_cpu(sbp->s_feature_compat_ro) &
~NILFS_FEATURE_COMPAT_RO_SUPP;
if (!(sb->s_flags & MS_RDONLY) && features) {
if (!sb_rdonly(sb) && features) {
nilfs_msg(sb, KERN_ERR,
"couldn't mount RDWR because of unsupported optional features (%llx)",
(unsigned long long)features);
@ -1083,7 +1083,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
goto failed_unload;
}
if (!(sb->s_flags & MS_RDONLY)) {
if (!sb_rdonly(sb)) {
err = nilfs_attach_log_writer(sb, fsroot);
if (err)
goto failed_checkpoint;
@ -1095,7 +1095,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
nilfs_put_root(fsroot);
if (!(sb->s_flags & MS_RDONLY)) {
if (!sb_rdonly(sb)) {
down_write(&nilfs->ns_sem);
nilfs_setup_super(sb, true);
up_write(&nilfs->ns_sem);
@ -1144,7 +1144,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
goto restore_opts;
}
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
if ((bool)(*flags & MS_RDONLY) == sb_rdonly(sb))
goto out;
if (*flags & MS_RDONLY) {
/* Shutting down log writer */
@ -1338,8 +1338,7 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
if ((flags ^ s->s_flags) & MS_RDONLY) {
nilfs_msg(s, KERN_ERR,
"the device already has a %s mount.",
(s->s_flags & MS_RDONLY) ?
"read-only" : "read/write");
sb_rdonly(s) ? "read-only" : "read/write");
err = -EBUSY;
goto failed_super;
}