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Fix rounding error in gfs2_iomap_page_prepare

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Merge tag 'gfs2-v5.2.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 fix from Andreas Gruenbacher:
 "Fix rounding error in gfs2_iomap_page_prepare"

* tag 'gfs2-v5.2.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Fix rounding error in gfs2_iomap_page_prepare
This commit is contained in:
Linus Torvalds 2019-06-14 17:27:12 -10:00
commit 4066524401
1 changed files with 4 additions and 1 deletions
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5
fs/gfs2/bmap.c
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@ -991,9 +991,12 @@ static void gfs2_write_unlock(struct inode *inode)
static int gfs2_iomap_page_prepare(struct inode *inode, loff_t pos,
unsigned len, struct iomap *iomap)
{
unsigned int blockmask = i_blocksize(inode) - 1;
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned int blocks;
return gfs2_trans_begin(sdp, RES_DINODE + (len >> inode->i_blkbits), 0);
blocks = ((pos & blockmask) + len + blockmask) >> inode->i_blkbits;
return gfs2_trans_begin(sdp, RES_DINODE + blocks, 0);
}
static void gfs2_iomap_page_done(struct inode *inode, loff_t pos,