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nilfs2: remove timedwait ioctl command

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This removes NILFS_IOCTL_TIMEDWAIT command from ioctl interface along
with the related flags and wait queue.

The command is terrible because it just sleeps in the ioctl.  I prefer
to avoid this by devising means of event polling in userland program.
By reconsidering the userland GC daemon, I found this is possible
without changing behaviour of the daemon and sacrificing efficiency.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi
2009-04-06 19:01:51 -07:00
committed by Linus Torvalds
parent 76068c4ff1
commit 1088dcf4c3
5 changed files with 2 additions and 127 deletions
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22
include/linux/nilfs2_fs.h
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@@ -763,18 +763,6 @@ struct nilfs_bdesc {
__u32 bd_level;
};
#define NILFS_TIMEDWAIT_WRITE_LOCKED 0x1
#define NILFS_TIMEDWAIT_SEG_WRITE 0x2
/**
* struct nilfs_wait_cond -
*/
struct nilfs_wait_cond {
int wc_cond;
int wc_flags;
struct timespec wc_timeout;
};
#define NILFS_IOCTL_IDENT 'n'
#define NILFS_IOCTL_CHANGE_CPMODE \
@@ -795,8 +783,6 @@ struct nilfs_wait_cond {
_IOWR(NILFS_IOCTL_IDENT, 0x87, struct nilfs_argv)
#define NILFS_IOCTL_CLEAN_SEGMENTS \
_IOW(NILFS_IOCTL_IDENT, 0x88, struct nilfs_argv[5])
#define NILFS_IOCTL_TIMEDWAIT \
_IOWR(NILFS_IOCTL_IDENT, 0x89, struct nilfs_wait_cond)
#define NILFS_IOCTL_SYNC \
_IOR(NILFS_IOCTL_IDENT, 0x8A, __u64)
#define NILFS_IOCTL_RESIZE \
@@ -827,12 +813,6 @@ struct nilfs_sustat32 {
compat_time_t ss_nongc_ctime;
};
struct nilfs_wait_cond32 {
compat_int_t wc_cond;
compat_int_t wc_flags;
struct compat_timespec wc_timeout;
};
#define NILFS_IOCTL32_CHANGE_CPMODE \
_IOW(NILFS_IOCTL_IDENT, 0x80, struct nilfs_cpmode32)
#define NILFS_IOCTL32_GET_CPINFO \
@@ -847,8 +827,6 @@ struct nilfs_wait_cond32 {
_IOWR(NILFS_IOCTL_IDENT, 0x87, struct nilfs_argv32)
#define NILFS_IOCTL32_CLEAN_SEGMENTS \
_IOW(NILFS_IOCTL_IDENT, 0x88, struct nilfs_argv32[5])
#define NILFS_IOCTL32_TIMEDWAIT \
_IOWR(NILFS_IOCTL_IDENT, 0x89, struct nilfs_wait_cond32)
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_NILFS_FS_H */