ext4: stop issuing discards if not supported by device

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Turn off issuance of discard requests if the device does
not support it - similar to the action we take for barriers.
This will save a little computation time if a non-discardable
device is mounted with -o discard, and also makes it obvious
that it's not doing what was asked at mount time ...

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

...

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Eric Sandeen 2010-05-16 03:00:00 -04:00 • committed by Theodore Ts'o

parent 6b0310fbf0

commit a30eec2a86

1 changed files with 7 additions and 1 deletions

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8

fs/ext4/mballoc.c

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