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[RFC PATCH 14/16] DM: Wasted bio copy.

From Ram Pai <linuxram@us.ibm.com>
Newsgroups linux.kernel
Subject [RFC PATCH 14/16] DM: Wasted bio copy.
Date 2016-08-15 19:40 +0200
Message-ID <s6u1I-59-45@gated-at.bofh.it> (permalink)
References <s6u1H-59-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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No point doing it.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
---
 drivers/md/dm-inplace-compress.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/md/dm-inplace-compress.c b/drivers/md/dm-inplace-compress.c
index 55a515b..31b144b 100644
--- a/drivers/md/dm-inplace-compress.c
+++ b/drivers/md/dm-inplace-compress.c
@@ -1434,7 +1434,6 @@ static void dm_icomp_handle_write_comp(struct dm_icomp_req *req)
 		req->result = -EIO;
 		return;
 	}
-	dm_icomp_bio_copy(req->bio, 0, io->decomp_data, count << 9, true);
 
 	/* compress data */
 	comp_len = io->comp_len;
-- 
1.7.1

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Thread

[RFC PATCH 00/16] dm-inplace-compression block device Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 15/16] DM: Add sysfs parameters to track total memory saved and allocated. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 06/16] DM: separate out compression and decompression routines. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 12/16] DM: release unneeded buffer as soon as possible. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 14/16] DM: Wasted bio copy. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 11/16] DM: Try to avoid temporary buffer allocation to hold compressed data. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 13/16] DM: macros to set and get the state of the request. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 03/16] DM: Error if enough space is not available. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 16/16] DM: add documentation for dm-inplace-compress. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 09/16] DM: Delay allocation of decompression buffer during read. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:40 +0200
  [RFC PATCH 04/16] DM: Ensure that the read request is within the device range. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:50 +0200
  [RFC PATCH 07/16] DM: Optimize memory allocated to hold compressed buffer. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:50 +0200
  [RFC PATCH 10/16] DM: Try to use the bio buffer for decompression instead of allocating one. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:50 +0200
  [RFC PATCH 05/16] DM: allocation/free helper routines. Ram Pai <linuxram@us.ibm.com> - 2016-08-15 19:50 +0200

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