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authorFengguang Wu <wfg@mail.ustc.edu.cn>2007-10-16 01:24:33 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:42:52 -0700
commitf4e6b498d6e06742d72706ef50593a9c4dd72214 (patch)
tree74a573302b2ea086c0d21907175be604f110f5b1 /include/linux
parent0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937 (diff)
readahead: combine file_ra_state.prev_index/prev_offset into prev_pos
Combine the file_ra_state members unsigned long prev_index unsigned int prev_offset into loff_t prev_pos It is more consistent and better supports huge files. Thanks to Peter for the nice proposal! [akpm@linux-foundation.org: fix shift overflow] Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/fs.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8250811081f..500ffc0e4ac 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -704,8 +704,7 @@ struct file_ra_state {
unsigned int ra_pages; /* Maximum readahead window */
int mmap_miss; /* Cache miss stat for mmap accesses */
- unsigned long prev_index; /* Cache last read() position */
- unsigned int prev_offset; /* Offset where last read() ended in a page */
+ loff_t prev_pos; /* Cache last read() position */
};
/*