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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-06 11:25:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-06 11:25:08 -0700
commit044f1daaaaf7c86bc4fcf433848b7baae236946b (patch)
tree55a5b94c75cc6e51992ee3b5d7c49878c7ae7760 /fs
parentd557d1b58b3546bab2c5bc2d624c5709840e6b10 (diff)
parentdaaadb3e9453ab89c2e113a2d1df8e19e30944cc (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes and updates from Jens Axboe: "Some fixes and followup features/changes that should go in, in this merge window. This contains: - Two fixes for lightnvm from Javier, fixing problems in the new code merge previously in this merge window. - A fix from Jan for the backing device changes, fixing an issue in NFS that causes a failure to mount on certain setups. - A change from Christoph, cleaning up the blk-mq init and exit request paths. - Remove elevator_change(), which is now unused. From Bart. - A fix for queue operation invocation on a dead queue, from Bart. - A series fixing up mtip32xx for blk-mq scheduling, removing a bandaid we previously had in place for this. From me. - A regression fix for this series, fixing a case where we wait on workqueue flushing from an invalid (non-blocking) context. From me. - A fix/optimization from Ming, ensuring that we don't both quiesce and freeze a queue at the same time. - A fix from Peter on lock ordering for CPU hotplug. Not a real problem right now, but will be once the CPU hotplug rework goes in. - A series from Omar, cleaning up out blk-mq debugfs support, and adding support for exporting info from schedulers in debugfs as well. This is really useful in debugging stalls or livelocks. From Omar" * 'for-linus' of git://git.kernel.dk/linux-block: (28 commits) mq-deadline: add debugfs attributes kyber: add debugfs attributes blk-mq-debugfs: allow schedulers to register debugfs attributes blk-mq: untangle debugfs and sysfs blk-mq: move debugfs declarations to a separate header file blk-mq: Do not invoke queue operations on a dead queue blk-mq-debugfs: get rid of a bunch of boilerplate blk-mq-debugfs: rename hw queue directories from <n> to hctx<n> blk-mq-debugfs: don't open code strstrip() blk-mq-debugfs: error on long write to queue "state" file blk-mq-debugfs: clean up flag definitions blk-mq-debugfs: separate flags with | nfs: Fix bdi handling for cloned superblocks block/mq: Cure cpu hotplug lock inversion lightnvm: fix bad back free on error path lightnvm: create cmd before allocating request blk-mq: don't use sync workqueue flushing from drivers mtip32xx: convert internal commands to regular block infrastructure mtip32xx: cleanup internal tag assumptions block: don't call blk_mq_quiesce_queue() after queue is frozen ...
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/internal.h6
-rw-r--r--fs/nfs/super.c28
2 files changed, 13 insertions, 21 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 9dc65d7ae754..7b38fedb7e03 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -139,7 +139,7 @@ struct nfs_mount_request {
};
struct nfs_mount_info {
- int (*fill_super)(struct super_block *, struct nfs_mount_info *);
+ void (*fill_super)(struct super_block *, struct nfs_mount_info *);
int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
@@ -407,7 +407,7 @@ struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *
struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
const char *, struct nfs_mount_info *);
void nfs_kill_super(struct super_block *);
-int nfs_fill_super(struct super_block *, struct nfs_mount_info *);
+void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
extern struct rpc_stat nfs_rpcstat;
@@ -458,7 +458,7 @@ extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
/* super.c */
-int nfs_clone_super(struct super_block *, struct nfs_mount_info *);
+void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
void nfs_umount_begin(struct super_block *);
int nfs_statfs(struct dentry *, struct kstatfs *);
int nfs_show_options(struct seq_file *, struct dentry *);
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index dc69314d455e..2f3822a4a7d5 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2321,11 +2321,10 @@ inline void nfs_initialise_sb(struct super_block *sb)
/*
* Finish setting up an NFS2/3 superblock
*/
-int nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
+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);
- int ret;
sb->s_blocksize_bits = 0;
sb->s_blocksize = 0;
@@ -2343,21 +2342,13 @@ int nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
}
nfs_initialise_sb(sb);
-
- ret = super_setup_bdi_name(sb, "%u:%u", MAJOR(server->s_dev),
- MINOR(server->s_dev));
- if (ret)
- return ret;
- sb->s_bdi->ra_pages = server->rpages * NFS_MAX_READAHEAD;
- return 0;
-
}
EXPORT_SYMBOL_GPL(nfs_fill_super);
/*
* Finish setting up a cloned NFS2/3/4 superblock
*/
-int nfs_clone_super(struct super_block *sb, struct nfs_mount_info *mount_info)
+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);
@@ -2377,10 +2368,6 @@ int nfs_clone_super(struct super_block *sb, struct nfs_mount_info *mount_info)
}
nfs_initialise_sb(sb);
-
- sb->s_bdi = bdi_get(old_sb->s_bdi);
-
- return 0;
}
static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags)
@@ -2600,14 +2587,19 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
nfs_free_server(server);
server = NULL;
} else {
+ error = super_setup_bdi_name(s, "%u:%u", MAJOR(server->s_dev),
+ MINOR(server->s_dev));
+ if (error) {
+ mntroot = ERR_PTR(error);
+ goto error_splat_super;
+ }
+ s->s_bdi->ra_pages = server->rpages * NFS_MAX_READAHEAD;
server->super = s;
}
if (!s->s_root) {
/* initial superblock/root creation */
- error = mount_info->fill_super(s, mount_info);
- if (error)
- goto error_splat_super;
+ mount_info->fill_super(s, mount_info);
nfs_get_cache_cookie(s, mount_info->parsed, mount_info->cloned);
}