![]() Freeing a kiocb needed to touch the kioctx for three things: * Pull it off the reqs_active list * Decrementing reqs_active * Issuing a wakeup, if the kioctx was in the process of being freed. This patch moves these to aio_complete(), for a couple reasons: * aio_complete() already has to issue the wakeup, so if we drop the kioctx refcount before aio_complete does its wakeup we don't have to do it twice. * aio_complete currently has to take the kioctx lock, so it makes sense for it to pull the kiocb off the reqs_active list too. * A later patch is going to change reqs_active to include unreaped completions - this will mean allocating a kiocb doesn't have to look at the ringbuffer. So taking the decrement of reqs_active out of kiocb_free() is useful prep work for that patch. This doesn't really affect cancellation, since existing (usb) code that implements a cancel function still calls aio_complete() - we just have to make sure that aio_complete does the necessary teardown for cancelled kiocbs. It does affect code paths where we free kiocbs that were never submitted; they need to decrement reqs_active and pull the kiocb off the reqs_active list. This occurs in two places: kiocb_batch_free(), which is going away in a later patch, and the error path in io_submit_one. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Kent Overstreet <koverstreet@google.com> Cc: Zach Brown <zab@redhat.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jens Axboe <axboe@kernel.dk> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin LaHaise <bcrl@kvack.org> Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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acpi | ||
asm-generic | ||
clocksource | ||
crypto | ||
drm | ||
dt-bindings | ||
keys | ||
linux | ||
math-emu | ||
media | ||
memory | ||
misc | ||
net | ||
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