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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-14 18:54:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-14 18:54:01 -0700
commit0f0d12728e56c94d3289c6831243b6faeae8a19d (patch)
treebd52fd4ed6fba2a0d8bb95e7fc33f51ac299001d /fs/ext4/super.c
parent581bfce969cbfc7ce43ee92273be9cb7c3fdfa61 (diff)
parente462ec50cb5fad19f6003a3d8087f4a0945dd2b1 (diff)
downloadlinux-0f0d12728e56c94d3289c6831243b6faeae8a19d.tar.bz2
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
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
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c53
1 files changed, 25 insertions, 28 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 71b9a667e1bc..b104096fce9e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -405,7 +405,7 @@ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
static void ext4_handle_error(struct super_block *sb)
{
- if (sb->s_flags & MS_RDONLY)
+ if (sb_rdonly(sb))
return;
if (!test_opt(sb, ERRORS_CONT)) {
@@ -587,8 +587,7 @@ void __ext4_std_error(struct super_block *sb, const char *function,
/* Special case: if the error is EROFS, and we're not already
* inside a transaction, then there's really no point in logging
* an error. */
- if (errno == -EROFS && journal_current_handle() == NULL &&
- (sb->s_flags & MS_RDONLY))
+ if (errno == -EROFS && journal_current_handle() == NULL && sb_rdonly(sb))
return;
if (ext4_error_ratelimit(sb)) {
@@ -628,7 +627,7 @@ void __ext4_abort(struct super_block *sb, const char *function,
sb->s_id, function, line, &vaf);
va_end(args);
- if ((sb->s_flags & MS_RDONLY) == 0) {
+ if (sb_rdonly(sb) == 0) {
ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED;
/*
@@ -889,11 +888,11 @@ static void ext4_put_super(struct super_block *sb)
ext4_mb_release(sb);
ext4_ext_release(sb);
- if (!(sb->s_flags & MS_RDONLY) && !aborted) {
+ if (!sb_rdonly(sb) && !aborted) {
ext4_clear_feature_journal_needs_recovery(sb);
es->s_state = cpu_to_le16(sbi->s_mount_state);
}
- if (!(sb->s_flags & MS_RDONLY))
+ if (!sb_rdonly(sb))
ext4_commit_super(sb, 1);
for (i = 0; i < sbi->s_gdb_count; i++)
@@ -2100,7 +2099,7 @@ int ext4_seq_options_show(struct seq_file *seq, void *offset)
struct super_block *sb = seq->private;
int rc;
- seq_puts(seq, (sb->s_flags & MS_RDONLY) ? "ro" : "rw");
+ seq_puts(seq, sb_rdonly(sb) ? "ro" : "rw");
rc = _ext4_show_options(seq, sb, 1);
seq_puts(seq, "\n");
return rc;
@@ -2368,7 +2367,7 @@ static int ext4_check_descriptors(struct super_block *sb,
"Checksum for group %u failed (%u!=%u)",
i, le16_to_cpu(ext4_group_desc_csum(sb, i,
gdp)), le16_to_cpu(gdp->bg_checksum));
- if (!(sb->s_flags & MS_RDONLY)) {
+ if (!sb_rdonly(sb)) {
ext4_unlock_group(sb, i);
return 0;
}
@@ -3136,8 +3135,7 @@ int ext4_register_li_request(struct super_block *sb,
goto out;
}
- if (first_not_zeroed == ngroups ||
- (sb->s_flags & MS_RDONLY) ||
+ if (first_not_zeroed == ngroups || sb_rdonly(sb) ||
!test_opt(sb, INIT_INODE_TABLE))
goto out;
@@ -3683,7 +3681,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
* previously didn't change the revision level when setting the flags,
* so there is a chance incompat flags are set on a rev 0 filesystem.
*/
- if (!ext4_feature_set_ok(sb, (sb->s_flags & MS_RDONLY)))
+ if (!ext4_feature_set_ok(sb, (sb_rdonly(sb))))
goto failed_mount;
blocksize = BLOCK_SIZE << le32_to_cpu(es->s_log_block_size);
@@ -3812,12 +3810,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_hash_unsigned = 3;
else if ((i & EXT2_FLAGS_SIGNED_HASH) == 0) {
#ifdef __CHAR_UNSIGNED__
- if (!(sb->s_flags & MS_RDONLY))
+ if (!sb_rdonly(sb))
es->s_flags |=
cpu_to_le32(EXT2_FLAGS_UNSIGNED_HASH);
sbi->s_hash_unsigned = 3;
#else
- if (!(sb->s_flags & MS_RDONLY))
+ if (!sb_rdonly(sb))
es->s_flags |=
cpu_to_le32(EXT2_FLAGS_SIGNED_HASH);
#endif
@@ -4017,7 +4015,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
needs_recovery = (es->s_last_orphan != 0 ||
ext4_has_feature_journal_needs_recovery(sb));
- if (ext4_has_feature_mmp(sb) && !(sb->s_flags & MS_RDONLY))
+ if (ext4_has_feature_mmp(sb) && !sb_rdonly(sb))
if (ext4_multi_mount_protect(sb, le64_to_cpu(es->s_mmp_block)))
goto failed_mount3a;
@@ -4029,7 +4027,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
err = ext4_load_journal(sb, es, journal_devnum);
if (err)
goto failed_mount3a;
- } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) &&
+ } else if (test_opt(sb, NOLOAD) && !sb_rdonly(sb) &&
ext4_has_feature_journal_needs_recovery(sb)) {
ext4_msg(sb, KERN_ERR, "required journal recovery "
"suppressed and not mounted read-only");
@@ -4143,7 +4141,7 @@ no_journal:
goto failed_mount_wq;
}
- if (DUMMY_ENCRYPTION_ENABLED(sbi) && !(sb->s_flags & MS_RDONLY) &&
+ if (DUMMY_ENCRYPTION_ENABLED(sbi) && !sb_rdonly(sb) &&
!ext4_has_feature_encrypt(sb)) {
ext4_set_feature_encrypt(sb);
ext4_commit_super(sb, 1);
@@ -4197,7 +4195,7 @@ no_journal:
goto failed_mount4;
}
- if (ext4_setup_super(sb, es, sb->s_flags & MS_RDONLY))
+ if (ext4_setup_super(sb, es, sb_rdonly(sb)))
sb->s_flags |= MS_RDONLY;
/* determine the minimum size of new large inodes, if present */
@@ -4285,7 +4283,7 @@ no_journal:
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount. */
- if (ext4_has_feature_quota(sb) && !(sb->s_flags & MS_RDONLY)) {
+ if (ext4_has_feature_quota(sb) && !sb_rdonly(sb)) {
err = ext4_enable_quotas(sb);
if (err)
goto failed_mount8;
@@ -4609,7 +4607,7 @@ static int ext4_load_journal(struct super_block *sb,
* can get read-write access to the device.
*/
if (ext4_has_feature_journal_needs_recovery(sb)) {
- if (sb->s_flags & MS_RDONLY) {
+ if (sb_rdonly(sb)) {
ext4_msg(sb, KERN_INFO, "INFO: recovery "
"required on readonly filesystem");
if (really_read_only) {
@@ -4764,8 +4762,7 @@ static void ext4_mark_recovery_complete(struct super_block *sb,
if (jbd2_journal_flush(journal) < 0)
goto out;
- if (ext4_has_feature_journal_needs_recovery(sb) &&
- sb->s_flags & MS_RDONLY) {
+ if (ext4_has_feature_journal_needs_recovery(sb) && sb_rdonly(sb)) {
ext4_clear_feature_journal_needs_recovery(sb);
ext4_commit_super(sb, 1);
}
@@ -4821,7 +4818,7 @@ int ext4_force_commit(struct super_block *sb)
{
journal_t *journal;
- if (sb->s_flags & MS_RDONLY)
+ if (sb_rdonly(sb))
return 0;
journal = EXT4_SB(sb)->s_journal;
@@ -4886,7 +4883,7 @@ static int ext4_freeze(struct super_block *sb)
int error = 0;
journal_t *journal;
- if (sb->s_flags & MS_RDONLY)
+ if (sb_rdonly(sb))
return 0;
journal = EXT4_SB(sb)->s_journal;
@@ -4921,7 +4918,7 @@ out:
*/
static int ext4_unfreeze(struct super_block *sb)
{
- if ((sb->s_flags & MS_RDONLY) || ext4_forced_shutdown(EXT4_SB(sb)))
+ if (sb_rdonly(sb) || ext4_forced_shutdown(EXT4_SB(sb)))
return 0;
if (EXT4_SB(sb)->s_journal) {
@@ -5059,7 +5056,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
if (*flags & MS_LAZYTIME)
sb->s_flags |= MS_LAZYTIME;
- if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
+ if ((bool)(*flags & MS_RDONLY) != sb_rdonly(sb)) {
if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
err = -EROFS;
goto restore_opts;
@@ -5154,7 +5151,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
* Reinitialize lazy itable initialization thread based on
* current settings
*/
- if ((sb->s_flags & MS_RDONLY) || !test_opt(sb, INIT_INODE_TABLE))
+ if (sb_rdonly(sb) || !test_opt(sb, INIT_INODE_TABLE))
ext4_unregister_li_request(sb);
else {
ext4_group_t first_not_zeroed;
@@ -5731,7 +5728,7 @@ static inline int ext2_feature_set_ok(struct super_block *sb)
{
if (ext4_has_unknown_ext2_incompat_features(sb))
return 0;
- if (sb->s_flags & MS_RDONLY)
+ if (sb_rdonly(sb))
return 1;
if (ext4_has_unknown_ext2_ro_compat_features(sb))
return 0;
@@ -5762,7 +5759,7 @@ static inline int ext3_feature_set_ok(struct super_block *sb)
return 0;
if (!ext4_has_feature_journal(sb))
return 0;
- if (sb->s_flags & MS_RDONLY)
+ if (sb_rdonly(sb))
return 1;
if (ext4_has_unknown_ext3_ro_compat_features(sb))
return 0;