xfs: use current->journal_info for detecting transaction recursion

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Because the iomap code using PF_MEMALLOC_NOFS to detect transaction
recursion in XFS is just wrong. Remove it from the iomap code and
replace it with XFS specific internal checks using
current->journal_info instead.

[djwong: This change also realigns the lifetime of NOFS flag changes to
match the incore transaction, instead of the inconsistent scheme we have
now.]

Fixes: 9070733b4e ("xfs: abstract PF_FSTRANS to PF_MEMALLOC_NOFS")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

...

This commit is contained in:

Dave Chinner 2021-02-23 10:26:06 -08:00 • committed by Darrick J. Wong

parent 9febcda6f8

commit 756b1c3433

5 changed files with 60 additions and 26 deletions

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7

fs/iomap/buffered-io.c

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12

fs/xfs/libxfs/xfs_btree.c

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17

fs/xfs/xfs_aops.c

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20

fs/xfs/xfs_trans.c

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30

fs/xfs/xfs_trans.h

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