Commit 28016128 authored by Namjae Jeon's avatar Namjae Jeon Committed by Linus Torvalds

Documentation/filesystems/vfat.txt: update the limitation for fat fallocate

Update the limitation for fat fallocate.
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarAmit Sahrawat <a.sahrawat@samsung.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 16fab201
......@@ -180,6 +180,16 @@ dos1xfloppy -- If set, use a fallback default BIOS Parameter Block
<bool>: 0,1,yes,no,true,false
LIMITATION
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* The fallocated region of file is discarded at umount/evict time
when using fallocate with FALLOC_FL_KEEP_SIZE.
So, User should assume that fallocated region can be discarded at
last close if there is memory pressure resulting in eviction of
the inode from the memory. As a result, for any dependency on
the fallocated region, user should make sure to recheck fallocate
after reopening the file.
TODO
----------------------------------------------------------------------
* Need to get rid of the raw scanning stuff. Instead, always use
......
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