Commit 4086d3f6 authored Apr 21, 2017 by Hou Pengyang Committed by Jaegeuk Kim Apr 24, 2017

f2fs: skip encrypted inode in ASYNC IPU policy



Async request may be throttled in block layer, so page for async may keep WRITE_BACK
for a long time.

For encrytped inode, we need wait on page writeback no matter if the device supports
BDI_CAP_STABLE_WRITES. This may result in a higher waiting page writeback time for
async encrypted inode page.

This patch skips IPU for encrypted inode's updating write.

Signed-off-by: Hou Pengyang <houpengyang@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent a7881893

fs/f2fs/segment.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -593,7 +593,8 @@ static inline bool need_inplace_update(struct inode *inode,
		*/
		if (policy & (0x1 << F2FS_IPU_ASYNC) &&
		fio && fio->op == REQ_OP_WRITE &&
		!(fio->op_flags & REQ_SYNC))
		!(fio->op_flags & REQ_SYNC) &&
		!f2fs_encrypted_inode(inode))
		return true;

		/* this is only set during fdatasync */

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