LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

fcntl.2: srcfix 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2017-08-26 03:04:28 +02:00
parent 7b2316b859
commit ccdfed50fc
1 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
man2/fcntl.2
View File

@ -1501,10 +1501,9 @@ An application may
use this interface for separating writes into different write classes, use this interface for separating writes into different write classes,
so that multiple users or applications running on a single storage back-end so that multiple users or applications running on a single storage back-end
can aggregate their I/O patterns in a consistent manner. can aggregate their I/O patterns in a consistent manner.
However, there are However, there are no functional semantics implied by these flags,
no functional semantics implied by these flags, and different I/O classes and different I/O classes can use the write lifetime hints
can use the write lifetime hints in arbitrary ways so long as they are used in arbitrary ways so long as they are used consistently.
consistently.
.TP .TP
.BR F_GET_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)" .BR F_GET_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)"
Returns the value of the read/write hint associated with the underlying inode Returns the value of the read/write hint associated with the underlying inode
@ -1519,7 +1518,7 @@ Returns the value of the read/write hint associated with the file descriptor.
.TP .TP
.BR F_SET_FILE_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)" .BR F_SET_FILE_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)"
Sets the read/write hint value associated with the file descriptor. Sets the read/write hint value associated with the file descriptor.
.P .PP
If a given file descriptor has not been assigned a read/write hint, then it If a given file descriptor has not been assigned a read/write hint, then it
shall use the value assigned to the inode, if any. shall use the value assigned to the inode, if any.
The following read/write The following read/write
@ -1549,10 +1548,9 @@ data written with
Data written to this file or inode is expected to have a lifetime longer than Data written to this file or inode is expected to have a lifetime longer than
data written with data written with
.BR RWH_WRITE_LIFE_LONG . .BR RWH_WRITE_LIFE_LONG .
.P .PP
All the write specific hints are relative to each other, and no individual All the write specific hints are relative to each other, and no individual
absolute meaning should be attributed to them. absolute meaning should be attributed to them.
.P
.SH RETURN VALUE .SH RETURN VALUE
For a successful call, the return value depends on the operation: For a successful call, the return value depends on the operation:
.TP 0.9i .TP 0.9i