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

Documentation/filesystems/vfat.txt

+10 −0
Original line number Diff line number Diff line
@@ -180,6 +180,16 @@ dos1xfloppy -- If set, use a fallback default BIOS Parameter Block 


<bool>: 0,1,yes,no,true,false



LIMITATION

---------------------------------------------------------------------

* 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