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... to make it independent on mount stuff.
Signed-off-by: Karel Zak <kzak@redhat.com>
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Use dates without the day, use the full month name, put "util-linux" in
the lower left corner, and "User Commands" or "System Administration"
at the top center.
Also improve here and there the one-line program description.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Suggested by Hugh Dickins. Thanks.
Signed-off-by: Karel Zak <kzak@redhat.com>
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In kernel 2.6.36 (and in stable kernel 2.6.35.5) I made a tiny change
to the swapon(const char *path, int swapflags) system call interface:
kernel commit 3399446632739fcd05fd8b272b476a69c6e6d14a
swap: discard while swapping only if SWAP_FLAG_DISCARD
As things stand at present, we could just remove the swap discard
support; but since several filesystems (including ext4 and btrfs and
fat) are offering a "discard" mount option, I thought swap should take
the same course, and offer a "--discard" or "-d" option to swapon(8).
[kzak@redhat.com: - update swapon.8 man page
- use for -d the same logic as for -p]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
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This option is already supported by mount(8) and fsck(8), there is no
reason to have any exception for swap devices. Note that the --ifexists
command line option applies to all swap devices, the "nofail" setting
is per device.
Signed-off-by: Karel Zak <kzak@redhat.com>
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Btrfs, as of 2.6.35, is unable to allow swapfiles to be used on its
filesystems. This is due to the swapfile implementation wanting to
build an extent map of each block in the file and expecting it to be
static for the life of the swapfile.
Btrfs can't guarantee this and refuses to return the mapping. The
swapfile implementation just makes a comment about there being holes
in the file - but that's how btrfs denies the mapping.
This patch adds a section to the swapon manpage to document it.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
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Addresses-Debian-Bug: 487497
Signed-off-by: LaMont Jones <lamont@debian.org>
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Signed-off-by: Peter Breitenlohner <peb@mppmu.mpg.de>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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The patch:
commit 3399a218f4eff4016a22044e7c416521bc37c53c
Author: Matthias Koenig <mkoenig@suse.de>
Date: Thu Nov 27 12:32:56 2008 +0100
swapon: add swap format detection and pagesize check
introduced a new feature. This feature should be optional (disabled by
default) to keep happy people who use swap-space bad blocks or
nonstandard swap-space size.
CC: Hugh Dickins <hugh@veritas.com>
CC: Olaf Hering <olh@suse.de>
CC: Matthias Koenig <mkoenig@suse.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
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The patch also fix stupid bug in swapoff long options array.
Signed-off-by: Karel Zak <kzak@redhat.com>
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swapon.8: reorder options, lowercase command names, tweak sentences.
swapon.c: tweak descriptions, adjust spaces for proper alignment.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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