diff options
| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2011-12-23 17:03:17 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 19:25:22 +0100 |
| commit | 7ae79d7ff1769a3e9c47076b46e4eaa11204a2ee (patch) | |
| tree | 34c084261dd52d4f015f2399405824b9fcebda6f /include | |
| parent | mtd: introduce mtd_write interface (diff) | |
| download | linux-7ae79d7ff1769a3e9c47076b46e4eaa11204a2ee.tar.xz linux-7ae79d7ff1769a3e9c47076b46e4eaa11204a2ee.zip | |
mtd: introduce mtd_panic_write interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mtd/mtd.h | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 1da7f4a6ef88..2fb83cd3d264 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -186,6 +186,8 @@ struct mtd_info { size_t *retlen, u_char *buf); int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); + int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf); /* Backing device capabilities for this device * - provides mmap capabilities @@ -193,16 +195,6 @@ struct mtd_info { struct backing_dev_info *backing_dev_info; - - /* In blackbox flight recorder like scenarios we want to make successful - writes in interrupt context. panic_write() is only intended to be - called when its known the kernel is about to panic and we need the - write to succeed. Since the kernel is not going to be running for much - longer, this function can break locks and delay to ensure the write - succeeds (but not sleep). */ - - int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); - int (*read_oob) (struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops); int (*write_oob) (struct mtd_info *mtd, loff_t to, @@ -315,6 +307,19 @@ static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, return mtd->write(mtd, to, len, retlen, buf); } +/* + * In blackbox flight recorder like scenarios we want to make successful writes + * in interrupt context. panic_write() is only intended to be called when its + * known the kernel is about to panic and we need the write to succeed. Since + * the kernel is not going to be running for much longer, this function can + * break locks and delay to ensure the write succeeds (but not sleep). + */ +static inline int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) +{ + return mtd->panic_write(mtd, to, len, retlen, buf); +} + static inline struct mtd_info *dev_to_mtd(struct device *dev) { return dev ? dev_get_drvdata(dev) : NULL; |