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| author | Brian Atkinson <[email protected]> | 2022-03-14 13:37:39 -0600 |
|---|---|---|
| committer | GitHub <[email protected]> | 2022-03-14 12:37:39 -0700 |
| commit | becc717f6143caf80bad6879b6c6402538ecae89 (patch) | |
| tree | bfca8c4127635dbb2041877808991a71c75b25ea /copy-builtin | |
| parent | dad2b19fffda43894a005a042055e268fe6b32e3 (diff) | |
Adding ZERO_PAGE detection
On some architectures ZERO_PAGE is unavailable because it references
a GPL exported symbol of empty_zero_page. Originally e08b993 removed
the call to PAGE_ZERO(0) for assignment to the abd_zero_page. However,
a simple check can be done to avoid a kernel allocation and free for
the abd_zero_page if ZERO_PAGE is available.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Brian Atkinson <[email protected]>
Closes #13199
Diffstat (limited to 'copy-builtin')
0 files changed, 0 insertions, 0 deletions