diff options
Diffstat (limited to 'fs/ext4/mmp.c')
| -rw-r--r-- | fs/ext4/mmp.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index cebea4270817..588cb09c5291 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -52,7 +52,7 @@ static int write_mmp_block(struct super_block *sb, struct buffer_head *bh) lock_buffer(bh); bh->b_end_io = end_buffer_write_sync; get_bh(bh); - submit_bh(REQ_OP_WRITE, REQ_SYNC | REQ_META | REQ_PRIO, bh); + submit_bh(REQ_OP_WRITE | REQ_SYNC | REQ_META | REQ_PRIO, bh); wait_on_buffer(bh); sb_end_write(sb); if (unlikely(!buffer_uptodate(bh))) @@ -127,7 +127,7 @@ void __dump_mmp_msg(struct super_block *sb, struct mmp_struct *mmp, */ static int kmmpd(void *data) { - struct super_block *sb = (struct super_block *) data; + struct super_block *sb = data; struct ext4_super_block *es = EXT4_SB(sb)->s_es; struct buffer_head *bh = EXT4_SB(sb)->s_mmp_bh; struct mmp_struct *mmp; @@ -150,8 +150,6 @@ static int kmmpd(void *data) mmp_check_interval = max(EXT4_MMP_CHECK_MULT * mmp_update_interval, EXT4_MMP_MIN_CHECK_INTERVAL); mmp->mmp_check_interval = cpu_to_le16(mmp_check_interval); - BUILD_BUG_ON(sizeof(mmp->mmp_bdevname) < BDEVNAME_SIZE); - bdevname(bh->b_bdev, mmp->mmp_bdevname); memcpy(mmp->mmp_nodename, init_utsname()->nodename, sizeof(mmp->mmp_nodename)); @@ -267,7 +265,7 @@ static unsigned int mmp_new_seq(void) u32 new_seq; do { - new_seq = prandom_u32(); + new_seq = get_random_u32(); } while (new_seq > EXT4_MMP_SEQ_MAX); return new_seq; @@ -372,13 +370,16 @@ skip: EXT4_SB(sb)->s_mmp_bh = bh; + BUILD_BUG_ON(sizeof(mmp->mmp_bdevname) < BDEVNAME_SIZE); + snprintf(mmp->mmp_bdevname, sizeof(mmp->mmp_bdevname), + "%pg", bh->b_bdev); + /* * Start a kernel thread to update the MMP block periodically. */ EXT4_SB(sb)->s_mmp_tsk = kthread_run(kmmpd, sb, "kmmpd-%.*s", (int)sizeof(mmp->mmp_bdevname), - bdevname(bh->b_bdev, - mmp->mmp_bdevname)); + mmp->mmp_bdevname); if (IS_ERR(EXT4_SB(sb)->s_mmp_tsk)) { EXT4_SB(sb)->s_mmp_tsk = NULL; ext4_warning(sb, "Unable to create kmmpd thread for %s.", |