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Documentation: correct the description of FIEMAP_EXTENT_LAST

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Currently FIEMAP_EXTENT_LAST is not working consistently across
different filesystem's fiemap implementations. So add more information
about how else this flag could set in other implementation.

Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/5a00e8d4283d6849e0b8f408c8365b31fbc1d153.1582880246.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani 2020-02-28 14:56:59 +05:30 • committed by Theodore Ts'o
parent d3b6f23f71
commit 7af44c42df
1 changed files with 4 additions and 2 deletions
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6
Documentation/filesystems/fiemap.txt
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@ -115,8 +115,10 @@ data. Note that the opposite is not true - it would be valid for
FIEMAP_EXTENT_NOT_ALIGNED to appear alone. FIEMAP_EXTENT_NOT_ALIGNED to appear alone.
* FIEMAP_EXTENT_LAST * FIEMAP_EXTENT_LAST
This is the last extent in the file. A mapping attempt past this This is generally the last extent in the file. A mapping attempt past
extent will return nothing. this extent may return nothing. Some implementations set this flag to
indicate this extent is the last one in the range queried by the user
(via fiemap->fm_length).
* FIEMAP_EXTENT_UNKNOWN * FIEMAP_EXTENT_UNKNOWN
The location of this extent is currently unknown. This may indicate The location of this extent is currently unknown. This may indicate