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| author | Josef Bacik <josef@redhat.com> | 2012-05-29 16:57:49 -0400 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2012-05-30 10:23:42 -0400 |
| commit | 22ee6985de7d3e81ec0cef9c6ba01b45ad1bafeb (patch) | |
| tree | 96f9f1b4a4e0f0e77503fd63e6552a4a4b477e21 /fs/btrfs/btrfs_inode.h | |
| parent | 018642a1f197887058e97291460b890d296e8953 (diff) | |
| download | linux-22ee6985de7d3e81ec0cef9c6ba01b45ad1bafeb.tar.gz | |
Btrfs: check to see if the inode is in the log before fsyncing
We have this check down in the actual logging code, but this is after we start a transaction and all that good stuff. So move the helper inode_in_log() out so we can call it in fsync() and avoid starting a transaction altogether and just exit if we've already fsync()'ed this file recently. You would notice this issue if you fsync()'ed a file over and over again until the transaction committed. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
| -rw-r--r-- | fs/btrfs/btrfs_inode.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index ce2c9d60031e..e616f8872e69 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -199,4 +199,17 @@ static inline bool btrfs_is_free_space_inode(struct btrfs_root *root, return false; } +static inline int btrfs_inode_in_log(struct inode *inode, u64 generation) +{ + struct btrfs_root *root = BTRFS_I(inode)->root; + int ret = 0; + + mutex_lock(&root->log_mutex); + if (BTRFS_I(inode)->logged_trans == generation && + BTRFS_I(inode)->last_sub_trans <= root->last_log_commit) + ret = 1; + mutex_unlock(&root->log_mutex); + return ret; +} + #endif |