linux-toradex.git/fs/xfs/xfs_aops.c, branch v3.2.26

xfs: fix force shutdown handling in xfs_end_io

2011-11-08T16:48:23+00:00

Ensure ioend->io_error gets propagated back to e.g. AIO completions.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Alex Elder

xfs: warn if direct reclaim tries to writeback pages

2011-11-01T00:30:46+00:00

Direct reclaim should never writeback pages.  For now, handle the
situation and warn about it.  Ultimately, this will be a BUG_ON.

Signed-off-by: Mel Gorman 
Cc: Dave Chinner 
Cc: Christoph Hellwig 
Cc: Johannes Weiner 
Cc: Wu Fengguang 
Cc: Jan Kara 
Cc: Minchan Kim 
Cc: Rik van Riel 
Cc: Mel Gorman 
Cc: Alex Elder 
Cc: Theodore Ts'o 
Cc: Chris Mason 
Cc: Dave Hansen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

xfs: introduce xfs_bmapi_read()

2011-10-12T02:15:03+00:00

xfs_bmapi() currently handles both extent map reading and
allocation. As a result, the code is littered with "if (wr)"
branches to conditionally do allocation operations if required.
This makes the code much harder to follow and causes significant
indent issues with the code.

Given that read mapping is much simpler than allocation, we can
split out read mapping from xfs_bmapi() and reuse the logic that
we have already factored out do do all the hard work of handling the
extent map manipulations. The results in a much simpler function for
the common extent read operations, and will allow the allocation
code to be simplified in another commit.

Once xfs_bmapi_read() is implemented, convert all the callers of
xfs_bmapi() that are only reading extents to use the new function.

Signed-off-by: Dave Chinner 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: improve ioend error handling

2011-10-12T02:15:01+00:00

Return unwritten extent conversion errors to aio_complete.

Skip both unwritten extent conversion and size updates if we had an
I/O error or the filesystem has been shut down.

Return -EIO to the aio/buffer completion handlers in case of a
forced shutdown.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: remove i_iocount

2011-10-12T02:15:01+00:00

We now have an i_dio_count filed and surrounding infrastructure to wait
for direct I/O completion instead of i_icount, and we have never needed
to iocount waits for buffered I/O given that we only set the page uptodate
after finishing all required work.  Thus remove i_iocount, and replace
the actually needed waits with calls to inode_dio_wait.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: reduce ioend latency

2011-10-12T02:15:00+00:00

There is no reason to queue up ioends for processing in user context
unless we actually need it.  Just complete ioends that do not convert
unwritten extents or need a size update from the end_io context.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: defer AIO/DIO completions

2011-10-12T02:15:00+00:00

We really shouldn't complete AIO or DIO requests until we have finished
the unwritten extent conversion and size update.  This means fsync never
has to pick up any ioends as all work has been completed when signalling
I/O completion.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: remove dead ENODEV handling in xfs_destroy_ioend

2011-10-12T02:15:00+00:00

No driver returns ENODEV from it bio completion handler, not has this
ever been documented.  Remove the dead code dealing with it.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: fix a use after free in xfs_end_io_direct_write

2011-09-14T13:56:35+00:00

There is a window in which the ioend that we call inode_dio_wake on
in xfs_end_io_direct_write is already free.  Fix this by storing
the inode pointer in a local variable.

This is a fix for the regression introduced in 3.1-rc by
"fs: move inode_dio_done to the end_io handler".

Signed-off-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: remove subdirectories

2011-08-12T21:21:35+00:00

Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the
annoying subdirectories in the XFS source code.  Besides the large
amount of file rename the only changes are to the Makefile, a few
files including headers with the subdirectory prefix, and the binary
sysctl compat code that includes a header under fs/xfs/ from
kernel/.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Alex Elder