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author | David Howells <dhowells@redhat.com> | 2017-07-05 16:24:34 +0100 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-06 03:31:46 -0400 |
commit | 349d743895e2371bda9a02a5b465b50cc24d2825 (patch) | |
tree | 5a9ff4a63bf70603842b00e079b4fe6f25451e01 /fs/pstore/inode.c | |
parent | d86efb0df98afe0acdda7ed94963684c3fa7cccd (diff) | |
download | linux-stable-349d743895e2371bda9a02a5b465b50cc24d2825.tar.gz linux-stable-349d743895e2371bda9a02a5b465b50cc24d2825.tar.bz2 linux-stable-349d743895e2371bda9a02a5b465b50cc24d2825.zip |
pstore: Implement show_options
Implement the show_options superblock op for pstore as part of a bid to get
rid of s_options and generic_show_options() to make it easier to implement
a context-based mount where the mount options can be passed individually
over a file descriptor.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Kees Cook <keescook@chromium.org>
cc: Anton Vorontsov <anton@enomsg.org>
cc: Colin Cross <ccross@android.com>
cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pstore/inode.c')
-rw-r--r-- | fs/pstore/inode.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 792a4e5f9226..913e839ac1f5 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -283,6 +283,16 @@ static void parse_options(char *options) } } +/* + * Display the mount options in /proc/mounts. + */ +static int pstore_show_options(struct seq_file *m, struct dentry *root) +{ + if (kmsg_bytes != PSTORE_DEFAULT_KMSG_BYTES) + seq_printf(m, ",kmsg_bytes=%lu", kmsg_bytes); + return 0; +} + static int pstore_remount(struct super_block *sb, int *flags, char *data) { sync_filesystem(sb); @@ -296,7 +306,7 @@ static const struct super_operations pstore_ops = { .drop_inode = generic_delete_inode, .evict_inode = pstore_evict_inode, .remount_fs = pstore_remount, - .show_options = generic_show_options, + .show_options = pstore_show_options, }; static struct super_block *pstore_sb; @@ -448,8 +458,6 @@ static int pstore_fill_super(struct super_block *sb, void *data, int silent) { struct inode *inode; - save_mount_options(sb, data); - pstore_sb = sb; sb->s_maxbytes = MAX_LFS_FILESIZE; |