From fb27226c389f499d04913023fbcfb7920fb0e475 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Thu, 15 May 2025 10:39:22 -0700 Subject: [PATCH] fs/buffer: use sleeping lookup in __getblk_slowpath() Just as with the fast path, call the lookup variant depending on the gfp flags. Signed-off-by: Davidlohr Bueso Link: https://lore.kernel.org/20250515173925.147823-2-dave@stgolabs.net Reviewed-by: Jan Kara Signed-off-by: Christian Brauner --- fs/buffer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index 7ba1807145aa..8563d949cd2c 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1122,6 +1122,8 @@ static struct buffer_head * __getblk_slow(struct block_device *bdev, sector_t block, unsigned size, gfp_t gfp) { + bool blocking = gfpflags_allow_blocking(gfp); + /* Size must be multiple of hard sectorsize */ if (unlikely(size & (bdev_logical_block_size(bdev)-1) || (size < 512 || size > PAGE_SIZE))) { @@ -1137,7 +1139,10 @@ __getblk_slow(struct block_device *bdev, sector_t block, for (;;) { struct buffer_head *bh; - bh = __find_get_block(bdev, block, size); + if (blocking) + bh = __find_get_block_nonatomic(bdev, block, size); + else + bh = __find_get_block(bdev, block, size); if (bh) return bh; -- 2.25.1