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author | Al Viro <viro@zeniv.linux.org.uk> | 2019-12-10 07:31:01 -0500 |
---|---|---|
committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-01-15 10:15:16 -0500 |
commit | ab88dca311a3722a66f7dee3c352e634ad1e6a25 (patch) | |
tree | 88a8467f0799f7603904894e0b6a72f5dac16d7c /fs/nfs/super.c | |
parent | 0c38f2131df9865aa9fb24b7ad30a9657588e0e1 (diff) | |
download | linux-ab88dca311a3722a66f7dee3c352e634ad1e6a25.tar.gz linux-ab88dca311a3722a66f7dee3c352e634ad1e6a25.tar.bz2 linux-ab88dca311a3722a66f7dee3c352e634ad1e6a25.zip |
nfs: get rid of mount_info ->fill_super()
The only possible values are nfs_fill_super and nfs_clone_super. The
latter is used only when crossing into a submount and it is almost
identical to the former; the only differences are
* ->s_time_gran unconditionally set to 1 (even for v2 mounts).
Regression dating back to 2012, actually.
* ->s_blocksize/->s_blocksize_bits set to that of parent.
Rather than messing with the method, stash ->s_blocksize_bits in
mount_info in submount case and after the (now unconditional)
call of nfs_fill_super() override ->s_blocksize/->s_blocksize_bits
if that has been set.
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r-- | fs/nfs/super.c | 75 |
1 files changed, 16 insertions, 59 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 6239c78d8f54..2bcf0f8295e0 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2339,29 +2339,9 @@ out: EXPORT_SYMBOL_GPL(nfs_remount); /* - * Initialise the common bits of the superblock + * Finish setting up an NFS superblock */ -static void nfs_initialise_sb(struct super_block *sb) -{ - struct nfs_server *server = NFS_SB(sb); - - sb->s_magic = NFS_SUPER_MAGIC; - - /* We probably want something more informative here */ - snprintf(sb->s_id, sizeof(sb->s_id), - "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev)); - - if (sb->s_blocksize == 0) - sb->s_blocksize = nfs_block_bits(server->wsize, - &sb->s_blocksize_bits); - - nfs_super_set_maxbytes(sb, server->maxfilesize); -} - -/* - * Finish setting up an NFS2/3 superblock - */ -void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info) +static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info) { struct nfs_parsed_mount_data *data = mount_info->parsed; struct nfs_server *server = NFS_SB(sb); @@ -2391,44 +2371,17 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info) sb->s_time_max = S64_MAX; } - nfs_initialise_sb(sb); -} -EXPORT_SYMBOL_GPL(nfs_fill_super); - -/* - * Finish setting up a cloned NFS2/3/4 superblock - */ -void nfs_clone_super(struct super_block *sb, - struct nfs_mount_info *mount_info) -{ - const struct super_block *old_sb = mount_info->cloned->sb; - struct nfs_server *server = NFS_SB(sb); - - sb->s_blocksize_bits = old_sb->s_blocksize_bits; - sb->s_blocksize = old_sb->s_blocksize; - sb->s_maxbytes = old_sb->s_maxbytes; - sb->s_xattr = old_sb->s_xattr; - sb->s_op = old_sb->s_op; - sb->s_export_op = old_sb->s_export_op; + sb->s_magic = NFS_SUPER_MAGIC; - if (server->nfs_client->rpc_ops->version != 2) { - /* The VFS shouldn't apply the umask to mode bits. We will do - * so ourselves when necessary. - */ - sb->s_flags |= SB_POSIXACL; - sb->s_time_gran = 1; - } else - sb->s_time_gran = 1000; + /* We probably want something more informative here */ + snprintf(sb->s_id, sizeof(sb->s_id), + "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev)); - if (server->nfs_client->rpc_ops->version != 4) { - sb->s_time_min = 0; - sb->s_time_max = U32_MAX; - } else { - sb->s_time_min = S64_MIN; - sb->s_time_max = S64_MAX; - } + if (sb->s_blocksize == 0) + sb->s_blocksize = nfs_block_bits(server->wsize, + &sb->s_blocksize_bits); - nfs_initialise_sb(sb); + nfs_super_set_maxbytes(sb, server->maxfilesize); } static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags) @@ -2701,8 +2654,13 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name, } if (!s->s_root) { + unsigned bsize = mount_info->inherited_bsize; /* initial superblock/root creation */ - mount_info->fill_super(s, mount_info); + nfs_fill_super(s, mount_info); + if (bsize) { + s->s_blocksize_bits = bsize; + s->s_blocksize = 1U << bsize; + } nfs_get_cache_cookie(s, mount_info->parsed, mount_info->cloned); if (!(server->flags & NFS_MOUNT_UNSHARED)) s->s_iflags |= SB_I_MULTIROOT; @@ -2737,7 +2695,6 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data) { struct nfs_mount_info mount_info = { - .fill_super = nfs_fill_super, .set_security = nfs_set_sb_security, }; struct dentry *mntroot = ERR_PTR(-ENOMEM); |