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Revert "nfs: ignore SB_RDONLY when remounting nfs"

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[ Upstream commit 400fa37afb ]

This reverts commit 80c4de6ab4.

Silently ignoring the "ro" and "rw" mount options causes user confusion,
and regressions.

Reported-by: Alkis Georgopoulos<alkisg@gmail.com>
Cc: Li Lingfeng <lilingfeng3@huawei.com>
Fixes: 80c4de6ab4 ("nfs: ignore SB_RDONLY when remounting nfs")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Trond Myklebust
2026-01-11 15:21:37 +01:00
committed by Greg Kroah-Hartman
parent f718f9ea60
commit b2ed74f8cc
1 changed files with 0 additions and 10 deletions
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fs/nfs/super.c
-10
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@@ -1020,16 +1020,6 @@ int nfs_reconfigure(struct fs_context *fc)
sync_filesystem(sb);
/*
* The SB_RDONLY flag has been removed from the superblock during
* mounts to prevent interference between different filesystems.
* Similarly, it is also necessary to ignore the SB_RDONLY flag
* during reconfiguration; otherwise, it may also result in the
* creation of redundant superblocks when mounting a directory with
* different rw and ro flags multiple times.
*/
fc->sb_flags_mask &= ~SB_RDONLY;
/*
* Userspace mount programs that send binary options generally send
* them populated with default values. We have no way to know which