Btrfs: O_DIRECT writes via buffered writes + invaldiate

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This reworks the btrfs O_DIRECT write code a bit.  It had always fallen
back to buffered IO and done an invalidate, but needed to be updated
for the data=ordered code.  The invalidate wasn't actually removing pages
because they were still inside an ordered extent.

This also combines the O_DIRECT/O_SYNC paths where possible, and kicks
off IO in the main btrfs_file_write loop to keep the pipe down the the
disk full as we process long writes.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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This commit is contained in:

Chris Mason 2008-10-03 12:30:02 -04:00

parent 323ac95bce

commit cb843a6f51

3 changed files with 38 additions and 31 deletions

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64

fs/btrfs/file.c

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3

fs/btrfs/ordered-data.c

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2

fs/btrfs/ordered-data.h

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