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cifs: Fix support for remount when not changing rsize/wsize 

When remounting with the new mount API, we need to set
rsize and wsize to the previous values if they are not passed
in on the remount. Otherwise they get set to zero which breaks
xfstest 452 for example.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
zero-sugar-mainline-defconfig
Steve French 2020-12-16 18:04:27 -06:00
parent 31f6551ad7
commit 2d0604934f
1 changed files with 7 additions and 0 deletions
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7
fs/cifs/fs_context.c
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@ -707,6 +707,13 @@ static int smb3_reconfigure(struct fs_context *fc)
STEAL_STRING(cifs_sb, ctx, nodename);
STEAL_STRING(cifs_sb, ctx, iocharset);
/* if rsize or wsize not passed in on remount, use previous values */
if (ctx->rsize == 0)
ctx->rsize = cifs_sb->ctx->rsize;
if (ctx->wsize == 0)
ctx->wsize = cifs_sb->ctx->wsize;
smb3_cleanup_fs_context_contents(cifs_sb->ctx);
rc = smb3_fs_context_dup(cifs_sb->ctx, ctx);
smb3_update_mnt_flags(cifs_sb);