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| author | David Howells <dhowells@redhat.com> | 2022-02-21 11:38:17 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-12-28 09:45:24 +0000 |
| commit | 153a9961b551101cd38e94e26cd92fbfd198b19b (patch) | |
| tree | 4d45c248dbdaf8ded00848164de353f239f8bac9 /fs/netfs/main.c | |
| parent | 016dc8516aec8719641e7aaaacd78d344759178e (diff) | |
| download | linux-153a9961b551101cd38e94e26cd92fbfd198b19b.tar.gz linux-153a9961b551101cd38e94e26cd92fbfd198b19b.tar.bz2 linux-153a9961b551101cd38e94e26cd92fbfd198b19b.zip | |
netfs: Implement unbuffered/DIO write support
Implement support for unbuffered writes and direct I/O writes. If the
write is misaligned with respect to the fscrypt block size, then RMW cycles
are performed if necessary. DIO writes are a special case of unbuffered
writes with extra restriction imposed, such as block size alignment
requirements.
Also provide a field that can tell the code to add some extra space onto
the bounce buffer for use by the filesystem in the case of a
content-encrypted file.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Diffstat (limited to 'fs/netfs/main.c')
| -rw-r--r-- | fs/netfs/main.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/netfs/main.c b/fs/netfs/main.c index abb8857486ee..8e4db9ff40c4 100644 --- a/fs/netfs/main.c +++ b/fs/netfs/main.c @@ -26,11 +26,13 @@ LIST_HEAD(netfs_io_requests); DEFINE_SPINLOCK(netfs_proc_lock); static const char *netfs_origins[nr__netfs_io_origin] = { - [NETFS_READAHEAD] = "RA", - [NETFS_READPAGE] = "RP", - [NETFS_READ_FOR_WRITE] = "RW", - [NETFS_WRITEBACK] = "WB", - [NETFS_DIO_READ] = "DR", + [NETFS_READAHEAD] = "RA", + [NETFS_READPAGE] = "RP", + [NETFS_READ_FOR_WRITE] = "RW", + [NETFS_WRITEBACK] = "WB", + [NETFS_UNBUFFERED_WRITE] = "UW", + [NETFS_DIO_READ] = "DR", + [NETFS_DIO_WRITE] = "DW", }; /* |