erofs: allocate extra bvec pages directly instead of retrying

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If non-bootstrap bvecs cannot be kept in place (very rarely), an extra
short-lived page is allocated.

Let's just allocate it immediately rather than do unnecessary -EAGAIN
return first and retry as a cleanup.  Also it's unnecessary to use
__GFP_NOFAIL here since we could gracefully fail out this case instead.

Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Link: https://lore.kernel.org/r/20230526201459.128169-2-hsiangkao@linux.alibaba.com

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Gao Xiang 2023-05-27 04:14:54 +08:00

parent 796e9149a2

commit 05b63d2beb

1 changed files with 12 additions and 20 deletions

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fs/erofs/zdata.c

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