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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-08 10:00:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-08 10:00:20 -0700 |
| commit | 4a189982e293e662d719f5dd3ba6eec247d7bbc2 (patch) | |
| tree | a2384a2e4f56999a15fa80f0a07bff9fe23597f3 /include | |
| parent | 4189b863ba327bac4a869773aea4995f7716945a (diff) | |
| parent | 9a6d9a62e0fd4b9927c3124db0f25fc6b4fb6576 (diff) | |
| download | linux-4a189982e293e662d719f5dd3ba6eec247d7bbc2.tar.bz2 | |
Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull aio iopriority support from Al Viro:
"The rest of aio stuff for this cycle - Adam's aio ioprio series"
* 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: aio ioprio use ioprio_check_cap ret val
fs: aio ioprio add explicit block layer dependence
fs: iomap dio set bio prio from kiocb prio
fs: blkdev set bio prio from kiocb prio
fs: Add aio iopriority support
fs: Convert kiocb rw_hint from enum to u16
block: add ioprio_check_cap function
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 16 | ||||
| -rw-r--r-- | include/linux/ioprio.h | 9 | ||||
| -rw-r--r-- | include/uapi/linux/aio_abi.h | 1 |
3 files changed, 24 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 77333ed3a488..7207de8c4e9a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -36,6 +36,7 @@ #include <linux/delayed_call.h> #include <linux/uuid.h> #include <linux/errseq.h> +#include <linux/ioprio.h> #include <asm/byteorder.h> #include <uapi/linux/fs.h> @@ -299,7 +300,8 @@ struct kiocb { void (*ki_complete)(struct kiocb *iocb, long ret, long ret2); void *private; int ki_flags; - enum rw_hint ki_hint; + u16 ki_hint; + u16 ki_ioprio; /* See linux/ioprio.h */ } __randomize_layout; static inline bool is_sync_kiocb(struct kiocb *kiocb) @@ -1934,12 +1936,22 @@ static inline enum rw_hint file_write_hint(struct file *file) static inline int iocb_flags(struct file *file); +static inline u16 ki_hint_validate(enum rw_hint hint) +{ + typeof(((struct kiocb *)0)->ki_hint) max_hint = -1; + + if (hint <= max_hint) + return hint; + return 0; +} + static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) { *kiocb = (struct kiocb) { .ki_filp = filp, .ki_flags = iocb_flags(filp), - .ki_hint = file_write_hint(filp), + .ki_hint = ki_hint_validate(file_write_hint(filp)), + .ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0), }; } diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h index 627efac73e6d..9e30ed6443db 100644 --- a/include/linux/ioprio.h +++ b/include/linux/ioprio.h @@ -77,4 +77,13 @@ extern int ioprio_best(unsigned short aprio, unsigned short bprio); extern int set_task_ioprio(struct task_struct *task, int ioprio); +#ifdef CONFIG_BLOCK +extern int ioprio_check_cap(int ioprio); +#else +static inline int ioprio_check_cap(int ioprio) +{ + return -ENOTBLK; +} +#endif /* CONFIG_BLOCK */ + #endif diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h index ed0185945bb2..75846164290e 100644 --- a/include/uapi/linux/aio_abi.h +++ b/include/uapi/linux/aio_abi.h @@ -53,6 +53,7 @@ enum { * is valid. */ #define IOCB_FLAG_RESFD (1 << 0) +#define IOCB_FLAG_IOPRIO (1 << 1) /* read() from /dev/aio returns these structures. */ struct io_event { |