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xfs: remove xfs_buf.b_offset

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b_offset is only set for slab backed buffers and always set to
offset_in_page(bp->b_addr), which can be done just as easily in the only
user of b_offset.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Christoph Hellwig 2025-03-10 14:19:06 +01:00 committed by Carlos Maiolino
parent f2a3717a74
commit 51e1099315
2 changed files with 1 additions and 4 deletions
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3
fs/xfs/xfs_buf.c
View File

@ -278,7 +278,6 @@ xfs_buf_alloc_kmem(
bp->b_addr = NULL;
return -ENOMEM;
}
bp->b_offset = offset_in_page(bp->b_addr);
bp->b_pages = bp->b_page_array;
bp->b_pages[0] = kmem_to_page(bp->b_addr);
bp->b_page_count = 1;
@ -1474,7 +1473,7 @@ xfs_buf_submit_bio(
if (bp->b_flags & _XBF_KMEM) {
__bio_add_page(bio, virt_to_page(bp->b_addr), size,
bp->b_offset);
offset_in_page(bp->b_addr));
} else {
for (p = 0; p < bp->b_page_count; p++)
__bio_add_page(bio, bp->b_pages[p], PAGE_SIZE, 0);

2
fs/xfs/xfs_buf.h
View File

@ -194,8 +194,6 @@ struct xfs_buf {
int b_map_count;
atomic_t b_pin_count; /* pin count */
unsigned int b_page_count; /* size of page array */
unsigned int b_offset; /* page offset of b_addr,
only for _XBF_KMEM buffers */
int b_error; /* error code on I/O */
void (*b_iodone)(struct xfs_buf *bp);