提交 · 144a4c2ff75552e2aabb9256ca0ec5e277097153 · openeuler / Kernel

24 4月, 2012 33 次提交

由 Steven Whitehouse 提交于 4月 19, 2012

This patch removes a log lock from around atomic operation where
it is not needed, removes an unused variable, and also changes
a void pointer used incorrectly to a struct page pointer.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

144a4c2f

GFS2: Remove unused argument from gfs2_internal_read · 4306629e

由 Andrew Price 提交于 4月 16, 2012

gfs2_internal_read accepts an unused ra_state argument, left over from
when we did readahead on the rindex. Since there are currently no plans
to add back this readahead, this patch removes the ra_state parameter
and updates the functions which call gfs2_internal_read accordingly.
Signed-off-by: NAndrew Price <anprice@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

4306629e

GFS2: Remove bd_list_tr · c50b91c4

由 Steven Whitehouse 提交于 4月 16, 2012

This is another clean up in the logging code. This per-transaction
list was largely unused. Its main function was to ensure that the
number of buffers in a transaction was correct, however that counter
was only used to check the number of buffers in the bd_list_tr, plus
an assert at the end of each transaction. With the assert now changed
to use the calculated buffer counts, we can remove both bd_list_tr and
its associated counter.

This should make the code easier to understand as well as shrinking
a couple of structures.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

c50b91c4

GFS2: Remove duplicate log code · dad30e90

由 Steven Whitehouse 提交于 4月 16, 2012

The main part of this patch merges the two functions used to
write metadata and data buffers to the log. Most of the code
is common between the two functions, so this provides a nice
clean up, and makes the code more readable.

The gfs2_get_log_desc() function is also extended to take two more
arguments, and thus avoid having to set the length and data1
fields of this strucuture as a separate operation.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

dad30e90

GFS2: Clean up log write code path · e8c92ed7

由 Steven Whitehouse 提交于 4月 16, 2012

Prior to this patch, we have two ways of sending i/o to the log.
One of those is used when we need to allocate both the data
to be written itself and also a buffer head to submit it. This
is done via sb_getblk and friends. This is used mostly for writing
log headers.

The other method is used when writing blocks which have some
in-place counterpart. This is the case for all the metadata
blocks which are journalled, and when journaled data is in use,
for unescaped journalled data blocks.

This patch replaces both of those two methods, and about half
a dozen separate i/o submission points with a single i/o
submission function. We also go direct to bio rather than
using buffer heads, since this allows us to build i/o
requests of the maximum size for the block device in
question. It also reduces the memory required for flushing
the log, which can be very useful in low memory situations.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

e8c92ed7

GFS2: Use variable rather than qa to determine if unstuff necessary · 2f7ee358

由 Bob Peterson 提交于 4月 12, 2012

In the future, the qadata structure will be eliminated and merged
back in with the block reservation structure, after we extend the
lifespan of that. This patch is a step forward in eliminating the
qadata structure. It adds a variable to the do_grow function to
determine when unstuffing is necessary, and has been done.
Signed-off-by: NBob Peterson <rpeterso@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

2f7ee358

GFS2: Change variable blk to biblk · 9598d25e

由 Bob Peterson 提交于 4月 12, 2012

In the resource group code, we have no less than three different
kinds of block references: block relative to the file system (u64),
block relative to the rgrp (u32), and block relative to the bitmap.
This is a small step to making the code more readable; it renames
variable blk to biblk to solidify in my mind that it's relative to
the bitmap and nothing else.
Signed-off-by: NBob Peterson <rpeterso@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

9598d25e

GFS2: Fix function parameter comments in rgrp.c · 886b1416