diff options
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/fs/super.c b/fs/super.c index d20d5b11dedf..b9a214d2fe98 100644 --- a/fs/super.c +++ b/fs/super.c @@ -22,7 +22,6 @@ #include <linux/export.h> #include <linux/slab.h> -#include <linux/acct.h> #include <linux/blkdev.h> #include <linux/mount.h> #include <linux/security.h> @@ -218,7 +217,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) lockdep_set_class(&s->s_vfs_rename_mutex, &type->s_vfs_rename_key); mutex_init(&s->s_dquot.dqio_mutex); mutex_init(&s->s_dquot.dqonoff_mutex); - init_rwsem(&s->s_dquot.dqptr_sem); s->s_maxbytes = MAX_NON_LFS; s->s_op = &default_op; s->s_time_gran = 1000000000; @@ -702,12 +700,22 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force) return -EACCES; #endif - if (flags & MS_RDONLY) - acct_auto_close(sb); - shrink_dcache_sb(sb); - remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY); + if (remount_ro) { + if (sb->s_pins.first) { + up_write(&sb->s_umount); + sb_pin_kill(sb); + down_write(&sb->s_umount); + if (!sb->s_root) + return 0; + if (sb->s_writers.frozen != SB_UNFROZEN) + return -EBUSY; + remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY); + } + } + shrink_dcache_sb(sb); + /* If we are remounting RDONLY and current sb is read/write, make sure there are no rw files opened */ if (remount_ro) { |