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| author | Ingo Molnar <mingo@elte.hu> | 2010-04-30 09:56:41 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-30 09:56:44 +0200 |
| commit | 3ca50496c2677a2b3fdd3ede86660fd1433beac6 (patch) | |
| tree | 97a76d8479a8d8a96e04ed0694b8dbf89457bfcc /fs/block_dev.c | |
| parent | 462b04e28a7ec1339c892117c3f20a40e55d0e83 (diff) | |
| parent | 66f41d4c5c8a5deed66fdcc84509376c9a0bf9d8 (diff) | |
| download | kernel_samsung_crespo-3ca50496c2677a2b3fdd3ede86660fd1433beac6.zip kernel_samsung_crespo-3ca50496c2677a2b3fdd3ede86660fd1433beac6.tar.gz kernel_samsung_crespo-3ca50496c2677a2b3fdd3ede86660fd1433beac6.tar.bz2 | |
Merge commit 'v2.6.34-rc6' into perf/core
Merge reason: update to the latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 2a6d019..6dcee88 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -406,16 +406,23 @@ static loff_t block_llseek(struct file *file, loff_t offset, int origin) int blkdev_fsync(struct file *filp, struct dentry *dentry, int datasync) { - struct block_device *bdev = I_BDEV(filp->f_mapping->host); + struct inode *bd_inode = filp->f_mapping->host; + struct block_device *bdev = I_BDEV(bd_inode); int error; - error = sync_blockdev(bdev); - if (error) - return error; - + /* + * There is no need to serialise calls to blkdev_issue_flush with + * i_mutex and doing so causes performance issues with concurrent + * O_SYNC writers to a block device. + */ + mutex_unlock(&bd_inode->i_mutex); + error = blkdev_issue_flush(bdev, NULL); if (error == -EOPNOTSUPP) error = 0; + + mutex_lock(&bd_inode->i_mutex); + return error; } EXPORT_SYMBOL(blkdev_fsync); |