]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails
authorGao Xiang <gaoxiang25@huawei.com>
Thu, 31 Oct 2019 09:23:15 +0000 (17:23 +0800)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 15 Nov 2019 03:19:11 +0000 (22:19 -0500)
commit5500221ea1b72c550b61f88fe3e8afbb08445989
treeabff9db3e85a302c51438e7b1ff83c5054a3d229
parentebc11f7b1f2a016a99796b0923d9c0d7b7f9cba6
ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails

Similar to [1] [2], bio_alloc with __GFP_DIRECT_RECLAIM flags
guarantees bio allocation under some given restrictions, as
stated in block/bio.c and fs/direct-io.c So here it's ok to
not check for NULL value from bio_alloc().

[1] https://lore.kernel.org/r/20191030035518.65477-1-gaoxiang25@huawei.com
[2] https://lore.kernel.org/r/20190830162812.GA10694@infradead.org
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20191031092315.139267-1-gaoxiang25@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/page-io.c
fs/ext4/readpage.c