fs: add RWF_APPEND

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This is the per-I/O equivalent of O_APPEND to support atomic append
operations on any open file.

If a file is opened with O_APPEND, pwrite() ignores the offset and
always appends data to the end of the file. RWF_APPEND enables atomic
append and pwrite() with offset on a single file descriptor.

Signed-off-by: Jürg Billeter <j@bitron.ch>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Jürg Billeter 2017-09-29 14:07:17 +02:00 • committed by Al Viro

parent c981f254cc

commit e1fc742e14

2 changed files with 7 additions and 1 deletions

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6

include/uapi/linux/fs.h

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