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lustre: Convert to separately allocated bdi 

Allocate struct backing_dev_info separately instead of embedding it
inside superblock. This unifies handling of bdi among users.

CC: Oleg Drokin <oleg.drokin@intel.com>
CC: Andreas Dilger <andreas.dilger@intel.com>
CC: James Simmons <jsimmons@infradead.org>
CC: lustre-devel@lists.lustre.org
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Jan Kara 2017-04-12 12:24:30 +02:00 committed by Jens Axboe
parent 13eec2363e
commit 9594caf216
2 changed files with 3 additions and 25 deletions
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4
drivers/staging/lustre/lustre/include/lustre_disk.h
View File

@ -133,13 +133,9 @@ struct lustre_sb_info {
struct obd_export *lsi_osd_exp;
char lsi_osd_type[16];
char lsi_fstype[16];
struct backing_dev_info lsi_bdi; /* each client mountpoint needs
* own backing_dev_info
*/
};
#define LSI_UMOUNT_FAILOVER 0x00200000
#define LSI_BDI_INITIALIZED 0x00400000
#define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
#define s2lsi_nocast(sb) ((sb)->s_fs_info)

24
drivers/staging/lustre/lustre/llite/llite_lib.c
View File

@ -863,15 +863,6 @@ void ll_lli_init(struct ll_inode_info *lli)
mutex_init(&lli->lli_layout_mutex);
}
static inline int ll_bdi_register(struct backing_dev_info *bdi)
{
static atomic_t ll_bdi_num = ATOMIC_INIT(0);
bdi->name = "lustre";
return bdi_register(bdi, NULL, "lustre-%d",
atomic_inc_return(&ll_bdi_num));
}
int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
{
struct lustre_profile *lprof = NULL;
@ -881,6 +872,7 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
char *profilenm = get_profile_name(sb);
struct config_llog_instance *cfg;
int err;
static atomic_t ll_bdi_num = ATOMIC_INIT(0);
CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
@ -903,16 +895,11 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
if (err)
goto out_free;
err = bdi_init(&lsi->lsi_bdi);
if (err)
goto out_free;
lsi->lsi_flags |= LSI_BDI_INITIALIZED;
lsi->lsi_bdi.capabilities = 0;
err = ll_bdi_register(&lsi->lsi_bdi);
err = super_setup_bdi_name(sb, "lustre-%d",
atomic_inc_return(&ll_bdi_num));
if (err)
goto out_free;
sb->s_bdi = &lsi->lsi_bdi;
/* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
sb->s_d_op = &ll_d_ops;
@ -1033,11 +1020,6 @@ void ll_put_super(struct super_block *sb)
if (profilenm)
class_del_profile(profilenm);
if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
bdi_destroy(&lsi->lsi_bdi);
lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
}
ll_free_sbi(sb);
lsi->lsi_llsbi = NULL;