https://bugzilla.kernel.org/show_bug.cgi?id=22302 Theodore Tso <tytso@xxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tytso@xxxxxxx --- Comment #1 from Theodore Tso <tytso@xxxxxxx> 2010-11-07 22:25:01 --- This is caused by an interaction in two changes that happened in parallel in 2.6.36: commit id's dd3932eddf4 (block: remove BLKDEV_IFL_WAIT) and commit 5c521830cf3 (ext4: Support discard requests when running in no-journal mode). The problem is that ext4_free_blocks() can be called by functions which are holding spinlocks, so it can't sleep --- and sb_issue_discard() now always waits for the discard to be completed. It doesn't support an asynchronous mode at all. The fix for the short-term is to remove the call to ext4_issue_discard() in ext4_free_blocks(). This effectively removes the functionality of commit 5c521830cf3. The long-term fix would be to implement a version of sb_issue_discard() which supports asynchronous mode, with an optional callback. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
