fs: clean up the flags definition in uapi/linux/fs.h

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Add an explanation for the flags used by FS_IOC_[GS]ETFLAGS and remind
people that changes should be revised by linux-fsdevel and linux-api.

Add flags that are used on-disk for ext4, and remove FS_DIRECTIO_FL
since it was used only by gfs2 and support was removed in 2008 in
commit c9f6a6bbc2 ("The ability to mark files for direct i/o access
when opened normally is both unused and pointless, so this patch
removes support for that feature.")  Now we have _two_ remaining flags
left.  But since we want to discourage people from assigning new
flags, that's OK.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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This commit is contained in:

Theodore Ts'o 2016-01-08 16:01:25 -05:00

parent 9b7365fc1c

commit 68ce7bfcd9

1 changed files with 27 additions and 4 deletions

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include/uapi/linux/fs.h

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