diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-07-18 11:17:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-07-18 11:17:17 +0200 |
| commit | a2fe194723f6e4990d01d8c208c7b138fd410522 (patch) | |
| tree | 7aee93fa8f4ba1e18b56fa7d8eab75d249fc6966 /fs/buffer.c | |
| parent | c3b7cdf180090d2686239a75bb0ae408108ed749 (diff) | |
| parent | a018540141a931f5299a866907b27886916b4374 (diff) | |
Merge branch 'linus' into perf/core
Pick up the latest ring-buffer fixes, before applying a new fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 838a9cf246bd..c7062c896d7c 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1036,6 +1036,9 @@ grow_buffers(struct block_device *bdev, sector_t block, int size) static struct buffer_head * __getblk_slow(struct block_device *bdev, sector_t block, int size) { + int ret; + struct buffer_head *bh; + /* Size must be multiple of hard sectorsize */ if (unlikely(size & (bdev_logical_block_size(bdev)-1) || (size < 512 || size > PAGE_SIZE))) { @@ -1048,20 +1051,21 @@ __getblk_slow(struct block_device *bdev, sector_t block, int size) return NULL; } - for (;;) { - struct buffer_head * bh; - int ret; +retry: + bh = __find_get_block(bdev, block, size); + if (bh) + return bh; + ret = grow_buffers(bdev, block, size); + if (ret == 0) { + free_more_memory(); + goto retry; + } else if (ret > 0) { bh = __find_get_block(bdev, block, size); if (bh) return bh; - - ret = grow_buffers(bdev, block, size); - if (ret < 0) - return NULL; - if (ret == 0) - free_more_memory(); } + return NULL; } /* |