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author | Jens Axboe <jens.axboe@oracle.com> | 2009-09-16 15:02:33 +0200 |
---|---|---|
committer | Jens Axboe <jens.axboe@oracle.com> | 2009-09-16 15:18:51 +0200 |
commit | 32a88aa1b6dfb901cec64e1898cac78d0f25028a (patch) | |
tree | 51aa6f56ccfca53f495d015645373317bdee3647 /fs | |
parent | c4a77a6c7dcff04a2abc7fe4b6b2ae605be41c5b (diff) | |
download | kernel_samsung_tuna-32a88aa1b6dfb901cec64e1898cac78d0f25028a.zip kernel_samsung_tuna-32a88aa1b6dfb901cec64e1898cac78d0f25028a.tar.gz kernel_samsung_tuna-32a88aa1b6dfb901cec64e1898cac78d0f25028a.tar.bz2 |
fs: Assign bdi in super_block
We do this automatically in get_sb_bdev() from the set_bdev_super()
callback. Filesystems that have their own private backing_dev_info
must assign that in ->fill_super().
Note that ->s_bdi assignment is required for proper writeback!
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/btrfs/disk-io.c | 1 | ||||
-rw-r--r-- | fs/fuse/inode.c | 2 | ||||
-rw-r--r-- | fs/nfs/super.c | 2 | ||||
-rw-r--r-- | fs/super.c | 6 | ||||
-rw-r--r-- | fs/sync.c | 9 | ||||
-rw-r--r-- | fs/ubifs/super.c | 1 |
6 files changed, 20 insertions, 1 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 15831d5..8b81927 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1600,6 +1600,7 @@ struct btrfs_root *open_ctree(struct super_block *sb, sb->s_blocksize = 4096; sb->s_blocksize_bits = blksize_bits(4096); + sb->s_bdi = &fs_info->bdi; /* * we set the i_size on the btree inode to the max possible int. diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 4567db6..e5dbecd 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -894,6 +894,8 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) if (err) goto err_put_conn; + sb->s_bdi = &fc->bdi; + /* Handle umasking inside the fuse code */ if (sb->s_flags & MS_POSIXACL) fc->dont_mask = 1; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 867f705..de93569 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1918,6 +1918,8 @@ static inline void nfs_initialise_sb(struct super_block *sb) if (server->flags & NFS_MOUNT_NOAC) sb->s_flags |= MS_SYNCHRONOUS; + sb->s_bdi = &server->backing_dev_info; + nfs_super_set_maxbytes(sb, server->maxfilesize); } @@ -707,6 +707,12 @@ static int set_bdev_super(struct super_block *s, void *data) { s->s_bdev = data; s->s_dev = s->s_bdev->bd_dev; + + /* + * We set the bdi here to the queue backing, file systems can + * overwrite this in ->fill_super() + */ + s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; return 0; } @@ -27,6 +27,13 @@ */ static int __sync_filesystem(struct super_block *sb, int wait) { + /* + * This should be safe, as we require bdi backing to actually + * write out data in the first place + */ + if (!sb->s_bdi) + return 0; + /* Avoid doing twice syncing and cache pruning for quota sync */ if (!wait) { writeout_quota_sb(sb, -1); @@ -101,7 +108,7 @@ restart: spin_unlock(&sb_lock); down_read(&sb->s_umount); - if (!(sb->s_flags & MS_RDONLY) && sb->s_root) + if (!(sb->s_flags & MS_RDONLY) && sb->s_root && sb->s_bdi) __sync_filesystem(sb, wait); up_read(&sb->s_umount); diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 51763aa..c4af069 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1980,6 +1980,7 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) 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; |