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authorAndreas Gruenbacher <agruenba@redhat.com>2019-11-21 23:25:07 +0000
committerAndreas Gruenbacher <agruenba@redhat.com>2020-07-07 23:40:08 +0200
commit41da51bce36f44eefc1e3d0f47d18841cbd065ba (patch)
tree2e9b94061e69e326b30a5f8eabc350258f24c69a /include
parentdcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258 (diff)
fs: Add IOCB_NOIO flag for generic_file_read_iter
Add an IOCB_NOIO flag that indicates to generic_file_read_iter that it shouldn't trigger any filesystem I/O for the actual request or for readahead. This allows to do tentative reads out of the page cache as some filesystems allow, and to take the appropriate locks and retry the reads only if the requested pages are not cached. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3f881a892ea7..4b7cb76e5837 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -315,6 +315,7 @@ enum rw_hint {
#define IOCB_SYNC (1 << 5)
#define IOCB_WRITE (1 << 6)
#define IOCB_NOWAIT (1 << 7)
+#define IOCB_NOIO (1 << 9)
struct kiocb {
struct file *ki_filp;