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f2fs: Use mapping->gfp_mask to get file cache for writing

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On 32-bit architectures, when GFP_NOFS is used, the file cache for write
operations cannot be allocated from the highmem and CMA.

Since mapping->gfp_mask is set to GFP_HIGHUSER_MOVABLE during inode
allocation, using mapping_gfp_mask(mapping) as the GFP flag of getting file
cache for writing is more efficient for 32-bit architectures.

Additionally, use FGP_NOFS to avoid potential deadlock issues caused by
GFP_FS in GFP_HIGHUSER_MOVABLE

Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jiucheng Xu 2025-10-10 10:45:50 +00:00 committed by Jaegeuk Kim
parent e4384545e2
commit 2308de27c0
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/data.c
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@ -3570,7 +3570,8 @@ static int f2fs_write_begin(const struct kiocb *iocb,
* Will wait that below with our IO control.
*/
folio = __filemap_get_folio(mapping, index,
FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_NOFS,
mapping_gfp_mask(mapping));
if (IS_ERR(folio)) {
err = PTR_ERR(folio);
goto fail;