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remove SWRITE* I/O types

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These flags aren't real I/O types, but tell ll_rw_block to always
lock the buffer instead of giving up on a failed trylock.

Instead add a new write_dirty_buffer helper that implements this semantic
and use it from the existing SWRITE* callers.  Note that the ll_rw_block
code had a bug where it didn't promote WRITE_SYNC_PLUG properly, which
this patch fixes.

In the ufs code clean up the helper that used to call ll_rw_block
to mirror sync_dirty_buffer, which is the function it implements for
compound buffers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2010-08-11 17:06:24 +02:00
committed by Al Viro
parent 87e99511ea
commit 9cb569d601
16 changed files with 73 additions and 94 deletions
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18
fs/ufs/ialloc.c
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@@ -113,10 +113,8 @@ void ufs_free_inode (struct inode * inode)
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi));
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}
if (sb->s_flags & MS_SYNCHRONOUS)
ubh_sync_block(UCPI_UBH(ucpi));
sb->s_dirt = 1;
unlock_super (sb);
@@ -156,10 +154,8 @@ static void ufs2_init_inodes_chunk(struct super_block *sb,
fs32_add(sb, &ucg->cg_u.cg_u2.cg_initediblk, uspi->s_inopb);
ubh_mark_buffer_dirty(UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi));
ubh_wait_on_buffer(UCPI_UBH(ucpi));
}
if (sb->s_flags & MS_SYNCHRONOUS)
ubh_sync_block(UCPI_UBH(ucpi));
UFSD("EXIT\n");
}
@@ -290,10 +286,8 @@ cg_found:
}
ubh_mark_buffer_dirty (USPI_UBH(uspi));
ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
if (sb->s_flags & MS_SYNCHRONOUS) {
ubh_ll_rw_block(SWRITE, UCPI_UBH(ucpi));
ubh_wait_on_buffer (UCPI_UBH(ucpi));
}
if (sb->s_flags & MS_SYNCHRONOUS)
ubh_sync_block(UCPI_UBH(ucpi));
sb->s_dirt = 1;
inode->i_ino = cg * uspi->s_ipg + bit;