From 182374a0bddeef46769d2f8ab56fcccc433b96f3 Mon Sep 17 00:00:00 2001 From: Evgeniy Polyakov Date: Wed, 3 Feb 2010 01:04:30 +0300 Subject: Staging: Fixed pohmelfs regression because of per-bdi writeback. Since pohmelfs isn't tied to a single block device, it needs to setup a backing dev like nfs/btrfs/etc do. Signed-off-by: Jens Axboe Signed-off-by: Evgeniy Polyakov Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/staging/pohmelfs/inode.c | 20 ++++++++++++++++++-- drivers/staging/pohmelfs/netfs.h | 3 +++ 2 files changed, 21 insertions(+), 2 deletions(-) (limited to 'drivers/staging/pohmelfs') diff --git a/drivers/staging/pohmelfs/inode.c b/drivers/staging/pohmelfs/inode.c index 6a978c8dd5d1..eec3798eaf25 100644 --- a/drivers/staging/pohmelfs/inode.c +++ b/drivers/staging/pohmelfs/inode.c @@ -36,6 +36,7 @@ #define POHMELFS_MAGIC_NUM 0x504f482e static struct kmem_cache *pohmelfs_inode_cache; +static atomic_t psb_bdi_num = ATOMIC_INIT(0); /* * Removes inode from all trees, drops local name cache and removes all queued @@ -1331,6 +1332,8 @@ static void pohmelfs_put_super(struct super_block *sb) pohmelfs_crypto_exit(psb); pohmelfs_state_exit(psb); + bdi_destroy(&psb->bdi); + kfree(psb); sb->s_fs_info = NULL; } @@ -1814,11 +1817,22 @@ static int pohmelfs_fill_super(struct super_block *sb, void *data, int silent) if (!psb) goto err_out_exit; + err = bdi_init(&psb->bdi); + if (err) + goto err_out_free_sb; + + err = bdi_register(&psb->bdi, NULL, "pfs-%d", atomic_inc_return(&psb_bdi_num)); + if (err) { + bdi_destroy(&psb->bdi); + goto err_out_free_sb; + } + sb->s_fs_info = psb; sb->s_op = &pohmelfs_sb_ops; sb->s_magic = POHMELFS_MAGIC_NUM; sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_SIZE; + sb->s_bdi = &psb->bdi; psb->sb = sb; @@ -1862,11 +1876,11 @@ static int pohmelfs_fill_super(struct super_block *sb, void *data, int silent) err = pohmelfs_parse_options((char *) data, psb, 0); if (err) - goto err_out_free_sb; + goto err_out_free_bdi; err = pohmelfs_copy_crypto(psb); if (err) - goto err_out_free_sb; + goto err_out_free_bdi; err = pohmelfs_state_init(psb); if (err) @@ -1915,6 +1929,8 @@ err_out_state_exit: err_out_free_strings: kfree(psb->cipher_string); kfree(psb->hash_string); +err_out_free_bdi: + bdi_destroy(&psb->bdi); err_out_free_sb: kfree(psb); err_out_exit: diff --git a/drivers/staging/pohmelfs/netfs.h b/drivers/staging/pohmelfs/netfs.h index 623a07d29dea..01cba006e07a 100644 --- a/drivers/staging/pohmelfs/netfs.h +++ b/drivers/staging/pohmelfs/netfs.h @@ -18,6 +18,7 @@ #include #include +#include #define POHMELFS_CN_IDX 5 #define POHMELFS_CN_VAL 0 @@ -624,6 +625,8 @@ struct pohmelfs_sb { struct super_block *sb; + struct backing_dev_info bdi; + /* * Algorithm strings. */ -- cgit v1.2.3