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fs: reserve fallocate flag codepoint

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As discussed at the Plumber's Conference, reserve the bit 0x04 in
fallocate() to prevent collisions with a commonly used out-of-tree
patch which implements the no-hide-stale feature.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
2012-09-27 09:29:33 -04:00
parent cbb4ee830e
commit bbdd68086c
1 changed files with 1 additions and 0 deletions
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include/linux/falloc.h
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@@ -3,6 +3,7 @@
#define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */
#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */
#define FALLOC_FL_NO_HIDE_STALE 0x04 /* reserved codepoint */
#ifdef __KERNEL__