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Chris Mason 89ce8a63d0 Add btrfs_end_transaction_throttle to force writers to wait for pending commits ... The existing throttle mechanism was often not sufficient to prevent new writers from coming in and making a given transaction run forever. This adds an explicit wait at the end of most operations so they will allow the current transaction to close. There is no wait inside file_write, inode updates, or cow filling, all which have different deadlock possibilities. This is a temporary measure until better asynchronous commit support is added. This code leads to stalls as it waits for data=ordered writeback, and it really needs to be fixed. Signed-off-by: Chris Mason <chris.mason@oracle.com>		17 years ago
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btrfs	Add btrfs_end_transaction_throttle to force writers to wait for pending commits	17 years ago