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| author | Paulo Alcantara <pc@cjr.nz> | 2021-07-16 03:26:41 -0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-07-22 11:43:23 -0500 |
| commit | b62366181a5e9473e9c10e98f400049491c55876 (patch) | |
| tree | 89872d334ee61e3751fe03e4d7f0f5ea4389ce16 /fs/cifs/fs_context.c | |
| parent | 2485bd7557a7edb4520b4072af464f0a08c8efe0 (diff) | |
| download | linux-rpi-b62366181a5e9473e9c10e98f400049491c55876.tar.gz linux-rpi-b62366181a5e9473e9c10e98f400049491c55876.tar.bz2 linux-rpi-b62366181a5e9473e9c10e98f400049491c55876.zip | |
cifs: support share failover when remounting
When remouting a DFS share, force a new DFS referral of the path and
if the currently cached targets do not match any of the new targets or
there was no cached targets, then mark it for reconnect.
For example:
$ mount //dom/dfs/link /mnt -o username=foo,password=bar
$ ls /mnt
oldfile.txt
change target share of 'link' in server settings
$ mount /mnt -o remount,username=foo,password=bar
$ ls /mnt
newfile.txt
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/fs_context.c')
| -rw-r--r-- | fs/cifs/fs_context.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c index 553adfbcc22a..9a59d7ff9a11 100644 --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -13,6 +13,9 @@ #include <linux/magic.h> #include <linux/security.h> #include <net/net_namespace.h> +#ifdef CONFIG_CIFS_DFS_UPCALL +#include "dfs_cache.h" +#endif */ #include <linux/ctype.h> @@ -779,6 +782,10 @@ static int smb3_reconfigure(struct fs_context *fc) smb3_cleanup_fs_context_contents(cifs_sb->ctx); rc = smb3_fs_context_dup(cifs_sb->ctx, ctx); smb3_update_mnt_flags(cifs_sb); +#ifdef CONFIG_CIFS_DFS_UPCALL + if (!rc) + rc = dfs_cache_remount_fs(cifs_sb); +#endif return rc; } |