/*
 * linux/fs/ext4/truncate.h
 *
 * Common inline functions needed for truncate support
 */

/*
 * Truncate blocks that were not used by write. We have to truncate the
 * pagecache as well so that corresponding buffers get properly unmapped.
 */
static inline void ext4_truncate_failed_write(struct inode *inode)
{
	down_write(&EXT4_I(inode)->i_mmap_sem);
	truncate_inode_pages(inode->i_mapping, inode->i_size);
	ext4_truncate(inode);
	up_write(&EXT4_I(inode)->i_mmap_sem);
}

/*
 * Work out how many blocks we need to proceed with the next chunk of a
 * truncate transaction.
 */
static inline unsigned long ext4_blocks_for_truncate(struct inode *inode)
{
	ext4_lblk_t needed;

	needed = inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9);

	/* Give ourselves just enough room to cope with inodes in which
	 * i_blocks is corrupt: we've seen disk corruptions in the past
	 * which resulted in random data in an inode which looked enough
	 * like a regular file for ext4 to try to delete it.  Things
	 * will go a bit crazy if that happens, but at least we should
	 * try not to panic the whole kernel. */
	if (needed < 2)
		needed = 2;

	/* But we need to bound the transaction so we don't overflow the
	 * journal. */
	if (needed > EXT4_MAX_TRANS_DATA)
		needed = EXT4_MAX_TRANS_DATA;

	return EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + needed;
}

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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>renesas_usbhs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/mod_gadget.c?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>mod_gadget.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='72df5eba704252e54b5b19395cb938f8bb55cab8'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-06 14:37:55 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-06 14:37:55 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/mod_gadget.c?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>72df5eba704252e54b5b19395cb938f8bb55cab8</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/renesas_usbhs/mod_gadget.c?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/mod_gadget.c?id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>396bf4cd835e62d70fad4a03a8963e61f19021f2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/renesas_usbhs/mod_gadget.c?id=72df5eba704252e54b5b19395cb938f8bb55cab8&amp;id2=396bf4cd835e62d70fad4a03a8963e61f19021f2'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/renesas_usbhs/mod_gadget.c?id=f9f96fc10c09ca16e336854c08bc1563eed97985'>f9f96fc10c09ca16e336854c08bc1563eed97985</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/renesas_usbhs/mod_gadget.c?id=72df5eba704252e54b5b19395cb938f8bb55cab8&amp;id2=f9f96fc10c09ca16e336854c08bc1563eed97985'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'media/v4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media</div><div class='commit-msg'>Pull media fixes from Mauro Carvalho Chehab:
 "A few documentation fixes at CEC (with got promoted from staging for
  4.10), and one fix on its core."

* tag 'media/v4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] cec: fix wrong last_la determination
  [media] cec-intro.rst: mention the v4l-utils package and CEC utilities
  [media] cec rst: remove "This API is not yet finalized" notice
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=72df5eba704252e54b5b19395cb938f8bb55cab8'>Diffstat</a> (limited to 'drivers/usb/renesas_usbhs/mod_gadget.c')</div><table summary='diffstat' class='diffstat'>