Cc: LKML <linux-kernel@...>, Ingo Molnar <mingo@...>, Thomas Gleixner <tglx@...>, Peter Zijlstra <peterz@...>, Andrew Morton <akpm@...>, <prasad@...>, Linus Torvalds <torvalds@...>, Frank Ch. Eigler <fche@...>, David Wilder <dwilder@...>, <hch@...>, Martin Bligh <mbligh@...>, Christoph Hellwig <hch@...>, Masami Hiramatsu <mhiramat@...>, Steven Rostedt <srostedt@...>, Arnaldo Carvalho de Melo <acme@...>
I also got some corruption of the offset field in the struct page I use.
I think it might be related to the fact that I don't set the PG_private
bit (slob does set it when the page is in its free pages list). However,
given I'd like to pass the buffer pages to disk I/O and for network
socket and still keep the ability to re-use it when the I/O has been
performed, I wonder where I should put my
struct list_head list; /* linked list of buf pages */
size_t offset; /* page offset in the buffer */
fields ? Any ideas ?
They are currently in :
struct buf_page {
union {
struct {
unsigned long flags; /* mandatory */
atomic_t _count; /* mandatory */
union { /* mandatory */
atomic_t _mapcount;
struct {
u16 inuse;
u16 objects;
};
};
struct list_head list; /* linked list of buf pages */
size_t offset; /* page offset in the buffer */
};
struct page page;
};
};
Mathieu
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Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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