FAT: add 'errors' mount option

On severe errors FAT remounts itself in read-only mode. Allow to
specify FAT fs desired behavior through 'errors' mount option:
panic, continue or remount read-only.

`mount -t [fat|vfat] -o errors=[panic,remount-ro,continue] \
	<bdev> <mount point>`

This is analog to ext2 fs 'errors' mount option.

Signed-off-by: Denis Karpov <ext-denis.2.karpov@nokia.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index b42602298087..923990e4f16e 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -241,7 +241,7 @@ int fat_get_cluster(struct inode *inode, int cluster, int *fclus, int *dclus)
         while (*fclus < cluster) {
                 /* prevent the infinite loop of cluster chain */
                 if (*fclus > limit) {
-                        fat_fs_panic(sb, "%s: detected the cluster chain loop"
+                        fat_fs_error(sb, "%s: detected the cluster chain loop"
                                      " (i_pos %lld)", __func__,
                                      MSDOS_I(inode)->i_pos);
                         nr = -EIO;
@@ -252,7 +252,7 @@ int fat_get_cluster(struct inode *inode, int cluster, int *fclus, int *dclus)
                 if (nr < 0)
                         goto out;
                 else if (nr == FAT_ENT_FREE) {
-                        fat_fs_panic(sb, "%s: invalid cluster chain"
+                        fat_fs_error(sb, "%s: invalid cluster chain"
                                      " (i_pos %lld)", __func__,
                                      MSDOS_I(inode)->i_pos);
                         nr = -EIO;
@@ -285,7 +285,7 @@ static int fat_bmap_cluster(struct inode *inode, int cluster)
         if (ret < 0)
                 return ret;
         else if (ret == FAT_ENT_EOF) {
-                fat_fs_panic(sb, "%s: request beyond EOF (i_pos %lld)",
+                fat_fs_error(sb, "%s: request beyond EOF (i_pos %lld)",
                              __func__, MSDOS_I(inode)->i_pos);
                 return -EIO;
         }