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Linux 5.16: wait_on_page_bit() no longer available to modules

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Instead, linux/pagemap.h offers a number of folio-specific functions to
be called instead. In this case, module/os/linux/zfs/zfs_vnops_os.c
wants to call wait_on_page_bit(pp, PG_writeback). This gets replaced
with folio_wait_bit(folio_page(pp), PG_writeback). This change modifies
the code to conditionally compile that if configure identifies th
presence of the folio_wait_bit() function.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #12800
This commit is contained in:
Coleman Kane
2021-11-16 00:10:35 -05:00
committed by Tony Hutter
parent a1a29bf8fc
commit 12d27e7134
3 changed files with 32 additions and 0 deletions
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module/os/linux/zfs/zfs_vnops_os.c
+4
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@@ -3556,7 +3556,11 @@ zfs_putpage(struct inode *ip, struct page *pp, struct writeback_control *wbc)
if (wbc->sync_mode != WB_SYNC_NONE) {
if (PageWriteback(pp))
#ifdef HAVE_PAGEMAP_FOLIO_WAIT_BIT
folio_wait_bit(page_folio(pp), PG_writeback);
#else
wait_on_page_bit(pp, PG_writeback);
#endif
}
ZFS_EXIT(zfsvfs);