xavi/android_kernel_m2note/fs/squashfs/file.c, branch ng-7.1.2

Squashfs: implement .readpages()

2017-04-11T09:00:21+00:00

Squashfs does not implement .readpages(), so the kernel just repeatedly calls .readpage(). The readpages function tries to pack as much pages as possible in the same page actor so that only 1 read request is issued. Now that the read requests are asynchronous, the kernel can truly prefetch pages using its readahead algorithm. Signed-off-by: Adrien Schildknecht Change-Id: I09590c56876e931acca9070505476a98ab1ca79e

Squashfs: Restructure squashfs_readpage()

2017-04-11T09:00:17+00:00

Restructure squashfs_readpage() splitting it into separate functions for datablocks, fragments and sparse blocks. Move the memcpying (from squashfs cache entry) implementation of squashfs_readpage_block into file_cache.c This allows different implementations to be supported. Signed-off-by: Phillip Lougher Reviewed-by: Minchan Kim Change-Id: Ic915501b91711e56ea3231ba0bf6a6e1429dfd2a

first commit

2016-08-15T02:19:42+00:00