From: Jan Kara <jack@suse.cz>
To: Jens Axboe <axboe@kernel.dk>
Cc: <linux-block@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
Jan Kara <jack@suse.cz>, Richard Weinberger <richard@nod.at>,
Artem Bityutskiy <dedekind1@gmail.com>,
Adrian Hunter <adrian.hunter@intel.com>,
linux-mtd@lists.infradead.org
Subject: [PATCH 22/25] ubifs: Convert to separately allocated bdi
Date: Wed, 12 Apr 2017 12:24:46 +0200 [thread overview]
Message-ID: <20170412102449.16901-23-jack@suse.cz> (raw)
In-Reply-To: <20170412102449.16901-1-jack@suse.cz>
Allocate struct backing_dev_info separately instead of embedding it
inside the superblock. This unifies handling of bdi among users.
CC: Richard Weinberger <richard@nod.at>
CC: Artem Bityutskiy <dedekind1@gmail.com>
CC: Adrian Hunter <adrian.hunter@intel.com>
CC: linux-mtd@lists.infradead.org
Acked-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ubifs/super.c | 25 +++++++++----------------
fs/ubifs/ubifs.h | 3 ---
2 files changed, 9 insertions(+), 19 deletions(-)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index b73811bd7676..cf4cc99b75b5 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1827,7 +1827,6 @@ static void ubifs_put_super(struct super_block *sb)
}
ubifs_umount(c);
- bdi_destroy(&c->bdi);
ubi_close_volume(c->ubi);
mutex_unlock(&c->umount_mutex);
}
@@ -2019,29 +2018,25 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
goto out;
}
+ err = ubifs_parse_options(c, data, 0);
+ if (err)
+ goto out_close;
+
/*
* UBIFS provides 'backing_dev_info' in order to disable read-ahead. For
* UBIFS, I/O is not deferred, it is done immediately in readpage,
* which means the user would have to wait not just for their own I/O
* but the read-ahead I/O as well i.e. completely pointless.
*
- * Read-ahead will be disabled because @c->bdi.ra_pages is 0.
+ * Read-ahead will be disabled because @sb->s_bdi->ra_pages is 0. Also
+ * @sb->s_bdi->capabilities are initialized to 0 so there won't be any
+ * writeback happening.
*/
- c->bdi.name = "ubifs",
- c->bdi.capabilities = 0;
- err = bdi_init(&c->bdi);
+ err = super_setup_bdi_name(sb, "ubifs_%d_%d", c->vi.ubi_num,
+ c->vi.vol_id);
if (err)
goto out_close;
- err = bdi_register(&c->bdi, NULL, "ubifs_%d_%d",
- c->vi.ubi_num, c->vi.vol_id);
- if (err)
- goto out_bdi;
-
- err = ubifs_parse_options(c, data, 0);
- if (err)
- goto out_bdi;
- sb->s_bdi = &c->bdi;
sb->s_fs_info = c;
sb->s_magic = UBIFS_SUPER_MAGIC;
sb->s_blocksize = UBIFS_BLOCK_SIZE;
@@ -2080,8 +2075,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
ubifs_umount(c);
out_unlock:
mutex_unlock(&c->umount_mutex);
-out_bdi:
- bdi_destroy(&c->bdi);
out_close:
ubi_close_volume(c->ubi);
out:
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 4d57e488038e..4da10a6d702a 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -972,7 +972,6 @@ struct ubifs_debug_info;
* struct ubifs_info - UBIFS file-system description data structure
* (per-superblock).
* @vfs_sb: VFS @struct super_block object
- * @bdi: backing device info object to make VFS happy and disable read-ahead
*
* @highest_inum: highest used inode number
* @max_sqnum: current global sequence number
@@ -1220,7 +1219,6 @@ struct ubifs_debug_info;
*/
struct ubifs_info {
struct super_block *vfs_sb;
- struct backing_dev_info bdi;
ino_t highest_inum;
unsigned long long max_sqnum;
@@ -1461,7 +1459,6 @@ extern const struct inode_operations ubifs_file_inode_operations;
extern const struct file_operations ubifs_dir_operations;
extern const struct inode_operations ubifs_dir_inode_operations;
extern const struct inode_operations ubifs_symlink_inode_operations;
-extern struct backing_dev_info ubifs_backing_dev_info;
extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
/* io.c */
--
2.12.0
next prev parent reply other threads:[~2017-04-12 10:24 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-12 10:24 [PATCH 0/25 v3] fs: Convert all embedded bdis into separate ones Jan Kara
2017-04-12 10:24 ` [PATCH 01/25] bdi: Provide bdi_register_va() and bdi_alloc() Jan Kara
2017-04-12 10:24 ` [PATCH 02/25] block: Unregister bdi on last reference drop Jan Kara
2017-04-12 10:24 ` [PATCH 03/25] bdi: Export bdi_alloc_node() and bdi_put() Jan Kara
2017-04-12 10:24 ` [PATCH 04/25] fs: Provide infrastructure for dynamic BDIs in filesystems Jan Kara
2017-04-12 10:24 ` [PATCH 05/25] fs: Get proper reference for s_bdi Jan Kara
2017-04-12 10:24 ` [PATCH 06/25] lustre: Convert to separately allocated bdi Jan Kara
2017-04-12 10:24 ` [PATCH 07/25] 9p: " Jan Kara
2017-04-12 10:24 ` [PATCH 08/25] btrfs: " Jan Kara
2017-04-12 10:24 ` [PATCH 09/25] ceph: " Jan Kara
2017-04-12 10:24 ` [PATCH 10/25] cifs: " Jan Kara
2017-04-12 10:24 ` [PATCH 11/25] ecryptfs: " Jan Kara
2017-04-12 10:24 ` [PATCH 12/25] afs: " Jan Kara
2017-04-12 10:24 ` [PATCH 13/25] mtd: Convert to dynamically allocated bdi infrastructure Jan Kara
2017-04-12 10:24 ` [PATCH 14/25] coda: Convert to separately allocated bdi Jan Kara
2017-04-12 10:24 ` [PATCH 15/25] exofs: " Jan Kara
2017-04-12 10:24 ` [PATCH 16/25] fuse: " Jan Kara
2017-05-15 20:34 ` Rakesh Pandit
2017-05-16 10:48 ` Jan Kara
2017-05-16 18:37 ` Rakesh Pandit
2017-05-16 23:24 ` Jens Axboe
2017-05-17 7:46 ` Jan Kara
2017-05-17 14:15 ` Jens Axboe
2017-04-12 10:24 ` [PATCH 17/25] fuse: Get rid of bdi_initialized Jan Kara
2017-04-12 10:24 ` [PATCH 18/25] gfs2: Convert to properly refcounting bdi Jan Kara
2017-04-12 10:24 ` [PATCH 19/25] nilfs2: " Jan Kara
2017-04-12 13:47 ` Ryusuke Konishi
2017-04-12 10:24 ` [PATCH 20/25] ncpfs: Convert to separately allocated bdi Jan Kara
2017-04-12 10:24 ` [PATCH 21/25] nfs: " Jan Kara
2017-04-20 18:06 ` Trond Myklebust
2017-04-12 10:24 ` Jan Kara [this message]
2017-04-12 10:24 ` [PATCH 23/25] fs: Remove SB_I_DYNBDI flag Jan Kara
2017-04-12 10:24 ` [PATCH 24/25] block: Remove unused functions Jan Kara
2017-04-12 10:24 ` [PATCH 25/25] bdi: Drop 'parent' argument from bdi_register[_va]() Jan Kara
2017-04-20 18:11 ` [PATCH 0/25 v3] fs: Convert all embedded bdis into separate ones Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2017-03-29 10:55 [PATCH 0/25 v2] " Jan Kara
2017-03-29 10:56 ` [PATCH 22/25] ubifs: Convert to separately allocated bdi Jan Kara
2017-04-12 8:20 ` Christoph Hellwig
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