BMC/Intel-BMC/linux.git/fs/nfs/write.c, branch dev-5.2

treewide: Add SPDX license identifier for missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which: - Have no license information of any form - Have EXPORT_.*_SYMBOL_GPL inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

NFS: Add a helper to return a pointer to the open context of a struct nfs_page

2019-04-25T18:18:15+00:00

Add a helper for when we remove the explicit pointer to the open context. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

pNFS: Add tracking to limit the number of pNFS retries

2019-04-25T18:18:14+00:00

When the client is reading or writing using pNFS, and hits an error on the DS, then it typically sends a LAYOUTERROR and/or LAYOUTRETURN to the MDS, before redirtying the failed pages, and going for a new round of reads/writebacks. The problem is that if the server has no way to fix the DS, then we may need a way to interrupt this loop after a set number of attempts have been made. This patch adds an optional module parameter that allows the admin to specify how many times to retry the read/writeback process before failing with a fatal error. The default behaviour is to retry forever. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Remove unused argument from nfs_create_request()

2019-04-25T18:18:14+00:00

All the callers of nfs_create_request() are now creating page group heads, so we can remove the redundant 'last' page argument. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Replace custom error reporting mechanism with generic one

2019-04-25T18:18:14+00:00

Replace the NFS custom error reporting mechanism with the generic mapping_set_error(). Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Don't call generic_error_remove_page() while holding locks

2019-04-25T18:18:14+00:00

The NFS read code can trigger writeback while holding the page lock. If an error then triggers a call to nfs_write_error_remove_page(), we can deadlock. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Don't interrupt file writeout due to fatal errors

2019-04-25T18:18:14+00:00

When flushing out dirty pages, the fact that we may hit fatal errors is not a reason to stop writeback. Those errors are reported through fsync(), not through the flush mechanism. Fixes: a6598813a4c5b ("NFS: Don't write back further requests if there...") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Fix up documentation warnings

2019-02-20T20:14:21+00:00

Fix up some compiler warnings about function parameters, etc not being correctly described or formatted. Signed-off-by: Trond Myklebust

NFS: Ensure NFS writeback allocations don't recurse back into NFS.

2019-02-20T20:14:20+00:00

All the allocations that we can hit in the NFS layer and sunrpc layers themselves are already marked as GFP_NOFS, but we need to ensure that any calls to generic kernel functionality do the right thing as well. Signed-off-by: Trond Myklebust

NFS: Pass error information to the pgio error cleanup routine

2019-02-20T20:14:20+00:00

Allow the caller to pass error information when cleaning up a failed I/O request so that we can conditionally take action to cancel the request altogether if the error turned out to be fatal. Signed-off-by: Trond Myklebust