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swap: rename SWP_FS to SWAP_FS_OPS to avoid ambiguity

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SWP_FS is used to make swap_{read,write}page() go through the filesystem,
and it's only used for swap files over NFS for now.  Otherwise it will
directly submit IO to blockdev according to swapfile extents reported by
filesystems in advance.

As Matthew pointed out [1], SWP_FS naming is somewhat confusing, so let's
rename to SWP_FS_OPS.

[1] https://lore.kernel.org/r/20200820113448.GM17456@casper.infradead.org

Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200822113019.11319-1-hsiangkao@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Gao Xiang
2020-10-13 16:52:04 -07:00
committed by Linus Torvalds
parent 146608bb75
commit 3264631548
4 changed files with 6 additions and 6 deletions
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2
mm/swapfile.c
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@@ -2437,7 +2437,7 @@ static int setup_swap_extents(struct swap_info_struct *sis, sector_t *span)
if (ret >= 0)
sis->flags |= SWP_ACTIVATED;
if (!ret) {
sis->flags |= SWP_FS;
sis->flags |= SWP_FS_OPS;
ret = add_swap_extent(sis, 0, sis->max, 0);
*span = sis->pages;
}