GFS2: Implement iomap for block_map

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This patch implements iomap for block mapping, and switches the
block_map function to use it under the covers.

The additional IOMAP_F_BOUNDARY iomap flag indicates when iomap has
reached a "metadata boundary" and fetching the next mapping is likely to
incur an additional I/O.  This flag is used for setting the bh buffer
boundary flag.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

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Bob Peterson 2017-02-16 10:27:16 -05:00 • committed by Andreas Gruenbacher

parent 5f8bd4440d

commit 3974320ca6

4 changed files with 276 additions and 69 deletions

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335

fs/gfs2/bmap.c

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4

fs/gfs2/bmap.h

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65

fs/gfs2/trace_gfs2.h

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3

include/linux/iomap.h

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