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| author | Carlos Maiolino <cmaiolino@redhat.com> | 2017-06-29 11:25:40 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-30 02:21:06 +0200 |
| commit | a8e2b6367794e6cee9eecba6d5ff425f338e0754 (patch) | |
| tree | df6a37f24748795a1426909f905742e908610172 | |
| parent | fs/dcache: init in_lookup_hashtable (diff) | |
| download | linux-a8e2b6367794e6cee9eecba6d5ff425f338e0754.tar.xz linux-a8e2b6367794e6cee9eecba6d5ff425f338e0754.zip | |
Make statfs properly return read-only state after emergency remount
Emergency remount (sysrq-u) sets MS_RDONLY to the superblock but doesn't set
MNT_READONLY to the mount point.
Once calculate_f_flags() only check for the mount point read only state,
when setting kstatfs flags, after an emergency remount, statfs does not
report the filesystem as read-only, even though it is.
Enable flags_by_sb() to also check for superblock read only state, so the
kstatfs and consequently statfs can properly show the read-only state of
the filesystem.
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/statfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/statfs.c b/fs/statfs.c index 4e4623c7a126..c1dfc374e3c1 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -38,6 +38,8 @@ static int flags_by_sb(int s_flags) flags |= ST_SYNCHRONOUS; if (s_flags & MS_MANDLOCK) flags |= ST_MANDLOCK; + if (s_flags & MS_RDONLY) + flags |= ST_RDONLY; return flags; } |