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gfs2: fallocate_chunk: Always initialize struct iomap 

In fallocate_chunk, always initialize the iomap before calling
gfs2_iomap_get_alloc: future changes could otherwise cause things like
iomap.flags to leak across calls.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2018-07-06 23:05:41 +01:00
parent 4a7727725d
commit c25892827c
1 changed files with 2 additions and 1 deletions
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3
fs/gfs2/file.c
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@ -877,7 +877,6 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_inode *ip = GFS2_I(inode);
loff_t end = offset + len; loff_t end = offset + len;
struct buffer_head *dibh; struct buffer_head *dibh;
struct iomap iomap = { };
int error; int error;
error = gfs2_meta_inode_buffer(ip, &dibh); error = gfs2_meta_inode_buffer(ip, &dibh);
@ -893,6 +892,8 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
} }
while (offset < end) { while (offset < end) {
struct iomap iomap = { };
error = gfs2_iomap_get_alloc(inode, offset, end - offset, error = gfs2_iomap_get_alloc(inode, offset, end - offset,
&iomap); &iomap);
if (error) if (error)