A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

ceph: set io_pages bdi hint

Browse source 
This patch sets the io_pages bdi hint based on the rsize mount option.
Without this patch large buffered reads (request size > max readahead)
are processed sequentially in chunks of the readahead size (i.e. read
requests are sent out up to the readahead size, then the
do_generic_file_read() function waits until the first page is received).

With this patch read requests are sent out at once up to the size
specified in the rsize mount option (default: 64 MB).

Signed-off-by: Andreas Gerstmayr <[email protected]>
Acked-by: Jeff Layton <[email protected]>
Signed-off-by: Yan, Zheng <[email protected]>
This commit is contained in:
Andreas Gerstmayr 2017-01-10 14:17:56 +01:00 • committed by Ilya Dryomov
commit 7c94ba2790
3 changed files with 12 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

5
Documentation/filesystems/ceph.txt
View file

@ -98,11 +98,10 @@ Mount Options
size.
rsize=X
Specify the maximum read size in bytes. By default there is no
maximum.
Specify the maximum read size in bytes. Default: 64 MB.
rasize=X
Specify the maximum readahead.
Specify the maximum readahead. Default: 8 MB.
mount_timeout=X
Specify the timeout value for mount (in seconds), in the case