xfs: make xfs_inode_set_eofblocks_tag cheaper for the common case

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For long growing file writes we will usually already have the
eofblocks tag set when adding more speculative preallocations.  Add
a flag in the inode to allow us to skip the the fairly expensive
AG-wide spinlocks and multiple radix tree operations in that case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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Christoph Hellwig 2016-09-19 11:09:48 +10:00 • committed by Dave Chinner

parent f8e3a82575

commit 85a6e764ff

2 changed files with 15 additions and 0 deletions

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14

fs/xfs/xfs_icache.c

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1

fs/xfs/xfs_inode.h

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