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gfs2: support ludicrously large folios in gfs2_trans_add_databufs() 

We may someday support folios larger than 4GB, so use a size_t for the
byte count within a folio to prevent unpleasant truncations.

Link: https://lkml.kernel.org/r/20230612210141.730128-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2023-06-12 22:01:32 +01:00 committed by Andrew Morton
parent 53418a18fc
commit 285e0fc95a
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/gfs2/aops.c
View File

@ -38,13 +38,13 @@
void gfs2_trans_add_databufs(struct gfs2_inode *ip, struct folio *folio,
unsigned int from, unsigned int len)
size_t from, size_t len)
{
struct buffer_head *head = folio_buffers(folio);
unsigned int bsize = head->b_size;
struct buffer_head *bh;
unsigned int to = from + len;
unsigned int start, end;
size_t to = from + len;
size_t start, end;
for (bh = head, start = 0; bh != head || !start;
bh = bh->b_this_page, start = end) {

2
fs/gfs2/aops.h
View File

@ -10,6 +10,6 @@
extern void adjust_fs_space(struct inode *inode);
extern void gfs2_trans_add_databufs(struct gfs2_inode *ip, struct folio *folio,
unsigned int from, unsigned int len);
size_t from, size_t len);
#endif /* __AOPS_DOT_H__ */