diff options
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 41 |
1 files changed, 12 insertions, 29 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 6fa530256bfd..e8aa7081d25c 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -275,6 +275,7 @@ void invalidate_bdev(struct block_device *bdev) return; invalidate_bh_lrus(); + lru_add_drain_all(); /* make sure all lru add caches are flushed */ invalidate_mapping_pages(mapping, 0, -1); } EXPORT_SYMBOL(invalidate_bdev); @@ -560,26 +561,17 @@ repeat: return err; } -static void do_thaw_all(struct work_struct *work) +static void do_thaw_one(struct super_block *sb, void *unused) { - struct super_block *sb; char b[BDEVNAME_SIZE]; + while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb)) + printk(KERN_WARNING "Emergency Thaw on %s\n", + bdevname(sb->s_bdev, b)); +} - spin_lock(&sb_lock); -restart: - list_for_each_entry(sb, &super_blocks, s_list) { - sb->s_count++; - spin_unlock(&sb_lock); - down_read(&sb->s_umount); - while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb)) - printk(KERN_WARNING "Emergency Thaw on %s\n", - bdevname(sb->s_bdev, b)); - up_read(&sb->s_umount); - spin_lock(&sb_lock); - if (__put_super_and_need_restart(sb)) - goto restart; - } - spin_unlock(&sb_lock); +static void do_thaw_all(struct work_struct *work) +{ + iterate_supers(do_thaw_one, NULL); kfree(work); printk(KERN_WARNING "Emergency Thaw complete\n"); } @@ -2893,7 +2885,7 @@ int block_write_full_page_endio(struct page *page, get_block_t *get_block, /* * The page straddles i_size. It must be zeroed out on each and every - * writepage invokation because it may be mmapped. "A file is mapped + * writepage invocation because it may be mmapped. "A file is mapped * in multiples of the page size. For a file that is not a multiple of * the page size, the remaining memory is zeroed when mapped, and * writes to that region are not written out to the file." @@ -3265,7 +3257,7 @@ static void recalc_bh_state(void) struct buffer_head *alloc_buffer_head(gfp_t gfp_flags) { - struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags); + struct buffer_head *ret = kmem_cache_zalloc(bh_cachep, gfp_flags); if (ret) { INIT_LIST_HEAD(&ret->b_assoc_buffers); get_cpu_var(bh_accounting).nr++; @@ -3352,15 +3344,6 @@ int bh_submit_read(struct buffer_head *bh) } EXPORT_SYMBOL(bh_submit_read); -static void -init_buffer_head(void *data) -{ - struct buffer_head *bh = data; - - memset(bh, 0, sizeof(*bh)); - INIT_LIST_HEAD(&bh->b_assoc_buffers); -} - void __init buffer_init(void) { int nrpages; @@ -3369,7 +3352,7 @@ void __init buffer_init(void) sizeof(struct buffer_head), 0, (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC| SLAB_MEM_SPREAD), - init_buffer_head); + NULL); /* * Limit the bh occupancy to 10% of ZONE_NORMAL |