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-rw-r--r--fs/ext3/fsync.c8
-rw-r--r--fs/ext3/super.c13
-rw-r--r--fs/quota/dquot.c6
3 files changed, 21 insertions, 6 deletions
diff --git a/fs/ext3/fsync.c b/fs/ext3/fsync.c
index b31dbd4..1cb9c7e 100644
--- a/fs/ext3/fsync.c
+++ b/fs/ext3/fsync.c
@@ -48,9 +48,13 @@ int ext3_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
trace_ext3_sync_file_enter(file, datasync);
- if (inode->i_sb->s_flags & MS_RDONLY)
+ if (inode->i_sb->s_flags & MS_RDONLY) {
+ /* Make sure that we read updated state */
+ smp_rmb();
+ if (EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS)
+ return -EROFS;
return 0;
-
+ }
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret)
goto out;
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 6356665..c47f147 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -174,6 +174,11 @@ static void ext3_handle_error(struct super_block *sb)
if (test_opt (sb, ERRORS_RO)) {
ext3_msg(sb, KERN_CRIT,
"error: remounting filesystem read-only");
+ /*
+ * Make sure updated value of ->s_mount_state will be visible
+ * before ->s_flags update.
+ */
+ smp_wmb();
sb->s_flags |= MS_RDONLY;
}
ext3_commit_super(sb, es, 1);
@@ -291,8 +296,14 @@ void ext3_abort(struct super_block *sb, const char *function,
ext3_msg(sb, KERN_CRIT,
"error: remounting filesystem read-only");
EXT3_SB(sb)->s_mount_state |= EXT3_ERROR_FS;
- sb->s_flags |= MS_RDONLY;
set_opt(EXT3_SB(sb)->s_mount_opt, ABORT);
+ /*
+ * Make sure updated value of ->s_mount_state will be visible
+ * before ->s_flags update.
+ */
+ smp_wmb();
+ sb->s_flags |= MS_RDONLY;
+
if (EXT3_SB(sb)->s_journal)
journal_abort(EXT3_SB(sb)->s_journal, -EIO);
}
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 3e64169..fbad622 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2585,7 +2585,7 @@ static int do_proc_dqstats(struct ctl_table *table, int write,
return proc_dointvec(table, write, buffer, lenp, ppos);
}
-static ctl_table fs_dqstats_table[] = {
+static struct ctl_table fs_dqstats_table[] = {
{
.procname = "lookups",
.data = &dqstats.stat[DQST_LOOKUPS],
@@ -2654,7 +2654,7 @@ static ctl_table fs_dqstats_table[] = {
{ },
};
-static ctl_table fs_table[] = {
+static struct ctl_table fs_table[] = {
{
.procname = "quota",
.mode = 0555,
@@ -2663,7 +2663,7 @@ static ctl_table fs_table[] = {
{ },
};
-static ctl_table sys_table[] = {
+static struct ctl_table sys_table[] = {
{
.procname = "fs",
.mode = 0555,
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