diff options
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 6fa530256bfd..c9c266db0624 100644 --- a/fs/buffer.c +++ b/fs/buffer.c | |||
| @@ -2893,7 +2893,7 @@ int block_write_full_page_endio(struct page *page, get_block_t *get_block, | |||
| 2893 | 2893 | ||
| 2894 | /* | 2894 | /* |
| 2895 | * The page straddles i_size. It must be zeroed out on each and every | 2895 | * The page straddles i_size. It must be zeroed out on each and every |
| 2896 | * writepage invokation because it may be mmapped. "A file is mapped | 2896 | * writepage invocation because it may be mmapped. "A file is mapped |
| 2897 | * in multiples of the page size. For a file that is not a multiple of | 2897 | * in multiples of the page size. For a file that is not a multiple of |
| 2898 | * the page size, the remaining memory is zeroed when mapped, and | 2898 | * the page size, the remaining memory is zeroed when mapped, and |
| 2899 | * writes to that region are not written out to the file." | 2899 | * writes to that region are not written out to the file." |
| @@ -3265,7 +3265,7 @@ static void recalc_bh_state(void) | |||
| 3265 | 3265 | ||
| 3266 | struct buffer_head *alloc_buffer_head(gfp_t gfp_flags) | 3266 | struct buffer_head *alloc_buffer_head(gfp_t gfp_flags) |
| 3267 | { | 3267 | { |
| 3268 | struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags); | 3268 | struct buffer_head *ret = kmem_cache_zalloc(bh_cachep, gfp_flags); |
| 3269 | if (ret) { | 3269 | if (ret) { |
| 3270 | INIT_LIST_HEAD(&ret->b_assoc_buffers); | 3270 | INIT_LIST_HEAD(&ret->b_assoc_buffers); |
| 3271 | get_cpu_var(bh_accounting).nr++; | 3271 | get_cpu_var(bh_accounting).nr++; |
| @@ -3352,15 +3352,6 @@ int bh_submit_read(struct buffer_head *bh) | |||
| 3352 | } | 3352 | } |
| 3353 | EXPORT_SYMBOL(bh_submit_read); | 3353 | EXPORT_SYMBOL(bh_submit_read); |
| 3354 | 3354 | ||
| 3355 | static void | ||
| 3356 | init_buffer_head(void *data) | ||
| 3357 | { | ||
| 3358 | struct buffer_head *bh = data; | ||
| 3359 | |||
| 3360 | memset(bh, 0, sizeof(*bh)); | ||
| 3361 | INIT_LIST_HEAD(&bh->b_assoc_buffers); | ||
| 3362 | } | ||
| 3363 | |||
| 3364 | void __init buffer_init(void) | 3355 | void __init buffer_init(void) |
| 3365 | { | 3356 | { |
| 3366 | int nrpages; | 3357 | int nrpages; |
| @@ -3369,7 +3360,7 @@ void __init buffer_init(void) | |||
| 3369 | sizeof(struct buffer_head), 0, | 3360 | sizeof(struct buffer_head), 0, |
| 3370 | (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC| | 3361 | (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC| |
| 3371 | SLAB_MEM_SPREAD), | 3362 | SLAB_MEM_SPREAD), |
| 3372 | init_buffer_head); | 3363 | NULL); |
| 3373 | 3364 | ||
| 3374 | /* | 3365 | /* |
| 3375 | * Limit the bh occupancy to 10% of ZONE_NORMAL | 3366 | * Limit the bh occupancy to 10% of ZONE_NORMAL |
