btrfs: replace kmap() with kmap_local_page() in inode.c

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The use of kmap() is being deprecated in favor of kmap_local_page() where
it is feasible. With kmap_local_page(), the mapping is per thread, CPU
local and not globally visible.

Therefore, use kmap_local_page() / kunmap_local() in inode.c wherever the
mappings are per thread and not globally visible.

Tested on QEMU + KVM 32 bits VM with 4GB of RAM and HIGHMEM64G enabled.

Suggested-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

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Fabio M. De Francesco 2022-05-31 16:53:33 +02:00 • committed by David Sterba

parent 9ff7ddd3c7

commit 70826b6bd5

1 changed files with 3 additions and 3 deletions

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fs/btrfs/inode.c

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