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buildid: use kmap_local_page()

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Use kmap_local_page() instead of kmap_atomic() which has been deprecated.

Link: https://lkml.kernel.org/r/20240306034804.62087-1-flyingpeng@tencent.com
Signed-off-by: Peng Hao <flyingpeng@tencent.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Peng Hao 2024-03-06 11:48:04 +08:00 committed by Andrew Morton
parent 75060b6ead
commit c44f063e74
1 changed files with 2 additions and 2 deletions
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4
lib/buildid.c
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@ -140,7 +140,7 @@ int build_id_parse(struct vm_area_struct *vma, unsigned char *build_id,
return -EFAULT; /* page not mapped */ return -EFAULT; /* page not mapped */
ret = -EINVAL; ret = -EINVAL;
page_addr = kmap_atomic(page); page_addr = kmap_local_page(page);
ehdr = (Elf32_Ehdr *)page_addr; ehdr = (Elf32_Ehdr *)page_addr;
/* compare magic x7f "ELF" */ /* compare magic x7f "ELF" */
@ -156,7 +156,7 @@ int build_id_parse(struct vm_area_struct *vma, unsigned char *build_id,
else if (ehdr->e_ident[EI_CLASS] == ELFCLASS64) else if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
ret = get_build_id_64(page_addr, build_id, size); ret = get_build_id_64(page_addr, build_id, size);
out: out:
kunmap_atomic(page_addr); kunmap_local(page_addr);
put_page(page); put_page(page);
return ret; return ret;
} }